2666112840 has 128 divisors (see below), whose sum is σ = 9173836800. Its totient is φ = 688020480.

The previous prime is 2666112833. The next prime is 2666112853. The reversal of 2666112840 is 482116662.

It is a super-2 number, since 2×2666112840² = 14216315351225731200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2666112795 and 2666112804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6337 + ... + 73296.

It is an arithmetic number, because the mean of its divisors is an integer number (71670600).

Almost surely, 2^2666112840 is an apocalyptic number.

2666112840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666112840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4586918400).

2666112840 is an abundant number, since it is smaller than the sum of its proper divisors (6507723960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666112840 is a wasteful number, since it uses less digits than its factorization.

2666112840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79684 (or 79674 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 2666112840 is about 51634.4152673389. The cubic root of 2666112840 is about 1386.6265415637.

The spelling of 2666112840 in words is "two billion, six hundred sixty-six million, one hundred twelve thousand, eight hundred forty".