655468565864556 has 24 divisors (see below), whose sum is σ = 1570762509190000. Its totient is φ = 212584399739712.

The previous prime is 655468565864551. The next prime is 655468565864573.

It is a happy number.

655468565864556 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×655468565864556² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (655468565864551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738140276431 + ... + 738140277318.

Almost surely, 2^{655468565864556} is an apocalyptic number.

It is an amenable number.

655468565864556 is an abundant number, since it is smaller than the sum of its proper divisors (915293943325444).

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

655468565864556 is a wasteful number, since it uses less digits than its factorization.

655468565864556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476280553793 (or 1476280553791 counting only the distinct ones).

The product of its digits is 124416000000, while the sum is 84.

The spelling of 655468565864556 in words is "six hundred fifty-five trillion, four hundred sixty-eight billion, five hundred sixty-five million, eight hundred sixty-four thousand, five hundred fifty-six".