55657672768776 has 32 divisors (see below), whose sum is σ = 149847580532160. Its totient is φ = 17125437774912.

The previous prime is 55657672768769. The next prime is 55657672768801. The reversal of 55657672768776 is 67786727675655.

55657672768776 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55657672768776² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (84) coincides with the sum of the digits of its prime factors.

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, 89194988100 + ... + 89194988723.

It is an arithmetic number, because the mean of its divisors is an integer number (4682736891630).

Almost surely, 2^{55657672768776} is an apocalyptic number.

It is an amenable number.

55657672768776 is an abundant number, since it is smaller than the sum of its proper divisors (94189907763384).

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

55657672768776 is a wasteful number, since it uses less digits than its factorization.

55657672768776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178389976845 (or 178389976841 counting only the distinct ones).

The product of its digits is 43563744000, while the sum is 84.

The spelling of 55657672768776 in words is "fifty-five trillion, six hundred fifty-seven billion, six hundred seventy-two million, seven hundred sixty-eight thousand, seven hundred seventy-six".