100115807172 has 24 divisors (see below), whose sum is σ = 233609193216. Its totient is φ = 33371129568.

The previous prime is 100115807153. The next prime is 100115807213. The reversal of 100115807172 is 271708511001.

100115807172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626818 + ... + 770150.

It is an arithmetic number, because the mean of its divisors is an integer number (9733716384).

Almost surely, 2^100115807172 is an apocalyptic number.

100115807172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100115807172 is an abundant number, since it is smaller than the sum of its proper divisors (133493386044).

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

100115807172 is a wasteful number, since it uses less digits than its factorization.

100115807172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201547 (or 201545 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 33.

The spelling of 100115807172 in words is "one hundred billion, one hundred fifteen million, eight hundred seven thousand, one hundred seventy-two".