16877917656 has 24 divisors (see below), whose sum is σ = 45711027180. Its totient is φ = 5625972528.

The previous prime is 16877917649. The next prime is 16877917699. The reversal of 16877917656 is 65671977861.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 16877917593 and 16877917602.

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, 117207690 + ... + 117207833.

Almost surely, 2^16877917656 is an apocalyptic number.

It is an amenable number.

16877917656 is an abundant number, since it is smaller than the sum of its proper divisors (28833109524).

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

16877917656 is a wasteful number, since it uses less digits than its factorization.

16877917656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234415535 (or 234415528 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 63.

The spelling of 16877917656 in words is "sixteen billion, eight hundred seventy-seven million, nine hundred seventeen thousand, six hundred fifty-six".