20117505525502 has 64 divisors (see below), whose sum is σ = 37647820514304. Its totient is φ = 7832684471040.

The previous prime is 20117505525499. The next prime is 20117505525521. The reversal of 20117505525502 is 20552550571102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2137199748 + ... + 2137209160.

It is an arithmetic number, because the mean of its divisors is an integer number (588247195536).

Almost surely, 2^{20117505525502} is an apocalyptic number.

20117505525502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20117505525502 is a deficient number, since it is larger than the sum of its proper divisors (17530314988802).

20117505525502 is a wasteful number, since it uses less digits than its factorization.

20117505525502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17353.

The product of its (nonzero) digits is 175000, while the sum is 40.

The spelling of 20117505525502 in words is "twenty trillion, one hundred seventeen billion, five hundred five million, five hundred twenty-five thousand, five hundred two".