55905774768 has 30 divisors (see below), whose sum is σ = 156458522844. Its totient is φ = 18635258208.

The previous prime is 55905774761. The next prime is 55905774851. The reversal of 55905774768 is 86747750955.

55905774768 is a `hidden beast` number, since 5 + 5 + 90 + 5 + 77 + 476 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (55905774761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194117130 + ... + 194117417.

Almost surely, 2^55905774768 is an apocalyptic number.

It is an amenable number.

55905774768 is an abundant number, since it is smaller than the sum of its proper divisors (100552748076).

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

55905774768 is a wasteful number, since it uses less digits than its factorization.

55905774768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388234561 (or 388234552 counting only the distinct ones).

The product of its (nonzero) digits is 74088000, while the sum is 63.

The spelling of 55905774768 in words is "fifty-five billion, nine hundred five million, seven hundred seventy-four thousand, seven hundred sixty-eight".