20013855276688 has 60 divisors (see below), whose sum is σ = 47987574426048. Its totient is φ = 7917569112960.

The previous prime is 20013855276671. The next prime is 20013855276697. The reversal of 20013855276688 is 88667255831002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 528664908 + ... + 528702763.

Almost surely, 2^{20013855276688} is an apocalyptic number.

20013855276688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20013855276688 is an abundant number, since it is smaller than the sum of its proper divisors (27973719149360).

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

20013855276688 is a wasteful number, since it uses less digits than its factorization.

20013855276688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057367712 (or 1057367693 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 61.

The spelling of 20013855276688 in words is "twenty trillion, thirteen billion, eight hundred fifty-five million, two hundred seventy-six thousand, six hundred eighty-eight".