77153155056 has 30 divisors (see below), whose sum is σ = 215921677400. Its totient is φ = 25717718304.

The previous prime is 77153155033. The next prime is 77153155063. The reversal of 77153155056 is 65055135177.

77153155056 is a `hidden beast` number, since 7 + 7 + 15 + 31 + 550 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 267892756 + ... + 267893043.

Almost surely, 2^77153155056 is an apocalyptic number.

It is an amenable number.

77153155056 is an abundant number, since it is smaller than the sum of its proper divisors (138768522344).

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

77153155056 is a wasteful number, since it uses less digits than its factorization.

77153155056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535785813 (or 535785804 counting only the distinct ones).

The product of its (nonzero) digits is 551250, while the sum is 45.

The spelling of 77153155056 in words is "seventy-seven billion, one hundred fifty-three million, one hundred fifty-five thousand, fifty-six".