20013137322500 has 120 divisors (see below), whose sum is σ = 50031435765696. Its totient is φ = 6859643760000.

The previous prime is 20013137322467. The next prime is 20013137322511. The reversal of 20013137322500 is 522373131002.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 60402287 + ... + 60732713.

Almost surely, 2^{20013137322500} is an apocalyptic number.

20013137322500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20013137322500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25015717882848).

20013137322500 is an abundant number, since it is smaller than the sum of its proper divisors (30018298443196).

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

20013137322500 is a wasteful number, since it uses less digits than its factorization.

20013137322500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333919 (or 333902 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The spelling of 20013137322500 in words is "twenty trillion, thirteen billion, one hundred thirty-seven million, three hundred twenty-two thousand, five hundred".