255787681156 has 24 divisors (see below), whose sum is σ = 512115621696. Its totient is φ = 109507522080.

The previous prime is 255787681147. The next prime is 255787681169. The reversal of 255787681156 is 651186787552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 255787681094 and 255787681103.

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, 4796755 + ... + 4849786.

It is an arithmetic number, because the mean of its divisors is an integer number (21338150904).

Almost surely, 2^255787681156 is an apocalyptic number.

It is an amenable number.

255787681156 is an abundant number, since it is smaller than the sum of its proper divisors (256327940540).

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

255787681156 is a wasteful number, since it uses less digits than its factorization.

255787681156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9647499 (or 9647497 counting only the distinct ones).

The product of its digits is 28224000, while the sum is 61.

The spelling of 255787681156 in words is "two hundred fifty-five billion, seven hundred eighty-seven million, six hundred eighty-one thousand, one hundred fifty-six".