9915368172 has 48 divisors (see below), whose sum is σ = 24248270592. Its totient is φ = 3147474880.

The previous prime is 9915368129. The next prime is 9915368231. The reversal of 9915368172 is 2718635199.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16479 + ... + 141782.

It is an arithmetic number, because the mean of its divisors is an integer number (505172304).

Almost surely, 2^9915368172 is an apocalyptic number.

9915368172 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

9915368172 is an abundant number, since it is smaller than the sum of its proper divisors (14332902420).

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

9915368172 is a wasteful number, since it uses less digits than its factorization.

9915368172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158518 (or 158516 counting only the distinct ones).

The product of its digits is 816480, while the sum is 51.

The square root of 9915368172 is about 99575.9417329307. The cubic root of 9915368172 is about 2148.3396716008.

The spelling of 9915368172 in words is "nine billion, nine hundred fifteen million, three hundred sixty-eight thousand, one hundred seventy-two".