20008537212520 has 64 divisors (see below), whose sum is σ = 45735162894720. Its totient is φ = 7877087564544.

The previous prime is 20008537212493. The next prime is 20008537212551. The reversal of 20008537212520 is 2521273580002.

It is a super-2 number, since 2×20008537212520² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20008537212520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14225499 + ... + 15568618.

It is an arithmetic number, because the mean of its divisors is an integer number (714611920230).

Almost surely, 2^{20008537212520} is an apocalyptic number.

20008537212520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20008537212520 is an abundant number, since it is smaller than the sum of its proper divisors (25726625682200).

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

20008537212520 is a wasteful number, since it uses less digits than its factorization.

20008537212520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29794394 (or 29794390 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 20008537212520 in words is "twenty trillion, eight billion, five hundred thirty-seven million, two hundred twelve thousand, five hundred twenty".