5115551440 has 160 divisors (see below), whose sum is σ = 12792038400. Its totient is φ = 1897961472.

The previous prime is 5115551429. The next prime is 5115551443. The reversal of 5115551440 is 441555115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5115551443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12885322 + ... + 12885718.

It is an arithmetic number, because the mean of its divisors is an integer number (79950240).

Almost surely, 2^5115551440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5115551440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6396019200).

5115551440 is an abundant number, since it is smaller than the sum of its proper divisors (7676486960).

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

5115551440 is a wasteful number, since it uses less digits than its factorization.

5115551440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 5115551440 is about 71523.0832668727. The cubic root of 5115551440 is about 1723.0484338443.

The spelling of 5115551440 in words is "five billion, one hundred fifteen million, five hundred fifty-one thousand, four hundred forty".