20013055564564 has 12 divisors (see below), whose sum is σ = 35027101254964. Its totient is φ = 10005312348864.

The previous prime is 20013055564471. The next prime is 20013055564609. The reversal of 20013055564564 is 46546555031002.

It can be written as a sum of positive squares in 2 ways, for example, as 11058897042064 + 8954158522500 = 3325492^2 + 2992350^2 .

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, 303821307 + ... + 303887170.

Almost surely, 2^{20013055564564} is an apocalyptic number.

It is an amenable number.

20013055564564 is a deficient number, since it is larger than the sum of its proper divisors (15014045690400).

20013055564564 is a wasteful number, since it uses less digits than its factorization.

20013055564564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607716714 (or 607716712 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 20013055564564 in words is "twenty trillion, thirteen billion, fifty-five million, five hundred sixty-four thousand, five hundred sixty-four".