655557925968 has 100 divisors (see below), whose sum is σ = 2069863496448. Its totient is φ = 198653912640.

The previous prime is 655557925961. The next prime is 655557925969. The reversal of 655557925968 is 869529755556.

655557925968 is a `hidden beast` number, since 6 + 5 + 5 + 557 + 9 + 2 + 5 + 9 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 655557925896 and 655557925905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655557925961) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22978096 + ... + 23006607.

Almost surely, 2^655557925968 is an apocalyptic number.

It is an amenable number.

655557925968 is an abundant number, since it is smaller than the sum of its proper divisors (1414305570480).

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

655557925968 is a wasteful number, since it uses less digits than its factorization.

655557925968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45984734 (or 45984719 counting only the distinct ones).

The product of its digits is 1020600000, while the sum is 72.

The spelling of 655557925968 in words is "six hundred fifty-five billion, five hundred fifty-seven million, nine hundred twenty-five thousand, nine hundred sixty-eight".