2066721126 has 16 divisors (see below), whose sum is σ = 4229569344. Its totient is φ = 672885864.

The previous prime is 2066721121. The next prime is 2066721131. The reversal of 2066721126 is 6211276602.

It is an interprime number because it is at equal distance from previous prime (2066721121) and next prime (2066721131).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066721121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4005016 + ... + 4005531.

It is an arithmetic number, because the mean of its divisors is an integer number (264348084).

Almost surely, 2^2066721126 is an apocalyptic number.

2066721126 is an abundant number, since it is smaller than the sum of its proper divisors (2162848218).

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

2066721126 is a wasteful number, since it uses less digits than its factorization.

2066721126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8010595.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 2066721126 is about 45461.2046254826. The cubic root of 2066721126 is about 1273.7786332290.

Adding to 2066721126 its reverse (6211276602), we get a palindrome (8277997728).

The spelling of 2066721126 in words is "two billion, sixty-six million, seven hundred twenty-one thousand, one hundred twenty-six".