255435635656 has 64 divisors (see below), whose sum is σ = 506053008000. Its totient is φ = 120539865600.

The previous prime is 255435635633. The next prime is 255435635677. The reversal of 255435635656 is 656536534552.

It is a junction number, because it is equal to n+sod(n) for n = 255435635597 and 255435635606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47733381 + ... + 47738731.

It is an arithmetic number, because the mean of its divisors is an integer number (7907078250).

Almost surely, 2^255435635656 is an apocalyptic number.

It is an amenable number.

255435635656 is a deficient number, since it is larger than the sum of its proper divisors (250617372344).

255435635656 is a wasteful number, since it uses less digits than its factorization.

255435635656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6502 (or 6498 counting only the distinct ones).

The product of its digits is 48600000, while the sum is 55.

The spelling of 255435635656 in words is "two hundred fifty-five billion, four hundred thirty-five million, six hundred thirty-five thousand, six hundred fifty-six".