655658856556 has 72 divisors (see below), whose sum is σ = 1279254105360. Its totient is φ = 293764331520.

The previous prime is 655658856529. The next prime is 655658856613.

655658856556 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×655658856556² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (70) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69917340 + ... + 69926716.

It is an arithmetic number, because the mean of its divisors is an integer number (17767418130).

Almost surely, 2^655658856556 is an apocalyptic number.

It is an amenable number.

655658856556 is a deficient number, since it is larger than the sum of its proper divisors (623595248804).

655658856556 is a wasteful number, since it uses less digits than its factorization.

655658856556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11455 (or 11442 counting only the distinct ones).

The product of its digits is 1296000000, while the sum is 70.

The spelling of 655658856556 in words is "six hundred fifty-five billion, six hundred fifty-eight million, eight hundred fifty-six thousand, five hundred fifty-six".