56776766216166 has 12 divisors (see below), whose sum is σ = 123016326801732. Its totient is φ = 18925588738716.

The previous prime is 56776766216119. The next prime is 56776766216207. The reversal of 56776766216166 is 66161266767765.

It is a junction number, because it is equal to n+sod(n) for n = 56776766216094 and 56776766216103.

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, 1577132394876 + ... + 1577132394911.

It is an arithmetic number, because the mean of its divisors is an integer number (10251360566811).

Almost surely, 2^{56776766216166} is an apocalyptic number.

56776766216166 is an abundant number, since it is smaller than the sum of its proper divisors (66239560585566).

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

56776766216166 is a wasteful number, since it uses less digits than its factorization.

56776766216166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154264789795 (or 3154264789792 counting only the distinct ones).

The product of its digits is 960180480, while the sum is 72.

The spelling of 56776766216166 in words is "fifty-six trillion, seven hundred seventy-six billion, seven hundred sixty-six million, two hundred sixteen thousand, one hundred sixty-six".