20455964676 has 72 divisors (see below), whose sum is σ = 59560417280. Its totient is φ = 5798532096.

The previous prime is 20455964657. The next prime is 20455964693. The reversal of 20455964676 is 67646955402.

20455964676 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 596 + 46 + 7 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287581 + ... + 351588.

Almost surely, 2^20455964676 is an apocalyptic number.

It is an amenable number.

20455964676 is an abundant number, since it is smaller than the sum of its proper divisors (39104452604).

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

20455964676 is a wasteful number, since it uses less digits than its factorization.

20455964676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639313 (or 639308 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 20455964676 in words is "twenty billion, four hundred fifty-five million, nine hundred sixty-four thousand, six hundred seventy-six".