56556706307 has 4 divisors (see below), whose sum is σ = 59533375080. Its totient is φ = 53580037536.

The previous prime is 56556706303. The next prime is 56556706361. The reversal of 56556706307 is 70360765565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56556706307 - 2² = 56556706303 is a prime.

It is a super-2 number, since 2×56556706307² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56556706303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488334358 + ... + 1488334395.

It is an arithmetic number, because the mean of its divisors is an integer number (14883343770).

Almost surely, 2^56556706307 is an apocalyptic number.

56556706307 is a deficient number, since it is larger than the sum of its proper divisors (2976668773).

56556706307 is a wasteful number, since it uses less digits than its factorization.

56556706307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976668772.

The product of its (nonzero) digits is 3969000, while the sum is 50.

The spelling of 56556706307 in words is "fifty-six billion, five hundred fifty-six million, seven hundred six thousand, three hundred seven".