909804011172 has 48 divisors (see below), whose sum is σ = 2426202694272. Its totient is φ = 259937717760.

The previous prime is 909804011113. The next prime is 909804011189. The reversal of 909804011172 is 271110408909.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 4218522 + ... + 4428942.

It is an arithmetic number, because the mean of its divisors is an integer number (50545889464).

Almost surely, 2^909804011172 is an apocalyptic number.

It is an amenable number.

909804011172 is an abundant number, since it is smaller than the sum of its proper divisors (1516398683100).

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

909804011172 is a wasteful number, since it uses less digits than its factorization.

909804011172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261908 (or 261906 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 909804011172 in words is "nine hundred nine billion, eight hundred four million, eleven thousand, one hundred seventy-two".