2556906496 has 22 divisors (see below), whose sum is σ = 5111318060. Its totient is φ = 1278452736.

The previous prime is 2556906491. The next prime is 2556906503. The reversal of 2556906496 is 6946096552.

It is not an unprimeable number, because it can be changed into a prime (2556906491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1247466 + ... + 1249513.

Almost surely, 2^2556906496 is an apocalyptic number.

It is an amenable number.

2556906496 is a deficient number, since it is larger than the sum of its proper divisors (2554411564).

2556906496 is an equidigital number, since it uses as much as digits as its factorization.

2556906496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496999 (or 2496981 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 52.

The square root of 2556906496 is about 50565.8629512045. The cubic root of 2556906496 is about 1367.4295125913.

The spelling of 2556906496 in words is "two billion, five hundred fifty-six million, nine hundred six thousand, four hundred ninety-six".