20455887796 has 12 divisors (see below), whose sum is σ = 35799714720. Its totient is φ = 10227397880.

The previous prime is 20455887779. The next prime is 20455887911. The reversal of 20455887796 is 69778855402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45466 + ... + 207313.

It is an arithmetic number, because the mean of its divisors is an integer number (2983309560).

Almost surely, 2^20455887796 is an apocalyptic number.

It is an amenable number.

20455887796 is a deficient number, since it is larger than the sum of its proper divisors (15343826924).

20455887796 is a wasteful number, since it uses less digits than its factorization.

20455887796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273014 (or 273012 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 20455887796 in words is "twenty billion, four hundred fifty-five million, eight hundred eighty-seven thousand, seven hundred ninety-six".