2556768307 has 24 divisors (see below), whose sum is σ = 2823152640. Its totient is φ = 2306692080.

The previous prime is 2556768299. The next prime is 2556768341. The reversal of 2556768307 is 7038676552.

It is not a de Polignac number, because 2556768307 - 2³ = 2556768299 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2556768377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2643538 + ... + 2644504.

It is an arithmetic number, because the mean of its divisors is an integer number (117631360).

Almost surely, 2^2556768307 is an apocalyptic number.

2556768307 is a deficient number, since it is larger than the sum of its proper divisors (266384333).

2556768307 is an equidigital number, since it uses as much as digits as its factorization.

2556768307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 49.

The square root of 2556768307 is about 50564.4965069366. The cubic root of 2556768307 is about 1367.4048777286.

The spelling of 2556768307 in words is "two billion, five hundred fifty-six million, seven hundred sixty-eight thousand, three hundred seven".