20117504772152 has 64 divisors (see below), whose sum is σ = 40537315948320. Its totient is φ = 9325291143168.

The previous prime is 20117504772097. The next prime is 20117504772181. The reversal of 20117504772152 is 25127740571102.

It is a super-2 number, since 2×20117504772152² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 234983018 + ... + 235068614.

Almost surely, 2^{20117504772152} is an apocalyptic number.

It is an amenable number.

20117504772152 is an abundant number, since it is smaller than the sum of its proper divisors (20419811176168).

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

20117504772152 is a wasteful number, since it uses less digits than its factorization.

20117504772152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111480 (or 111476 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 44.

The spelling of 20117504772152 in words is "twenty trillion, one hundred seventeen billion, five hundred four million, seven hundred seventy-two thousand, one hundred fifty-two".