655405563756 has 24 divisors (see below), whose sum is σ = 1529372134080. Its totient is φ = 218455309072.

The previous prime is 655405563689. The next prime is 655405563793. The reversal of 655405563756 is 657365504556.

It is a junction number, because it is equal to n+sod(n) for n = 655405563696 and 655405563705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1443786 + ... + 1842641.

It is an arithmetic number, because the mean of its divisors is an integer number (63723838920).

Almost surely, 2^655405563756 is an apocalyptic number.

It is an amenable number.

655405563756 is an abundant number, since it is smaller than the sum of its proper divisors (873966570324).

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

655405563756 is a wasteful number, since it uses less digits than its factorization.

655405563756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303053 (or 3303051 counting only the distinct ones).

The product of its (nonzero) digits is 56700000, while the sum is 57.

The spelling of 655405563756 in words is "six hundred fifty-five billion, four hundred five million, five hundred sixty-three thousand, seven hundred fifty-six".