11817750972 has 24 divisors (see below), whose sum is σ = 27776031696. Its totient is φ = 3910496128.

The previous prime is 11817750899. The next prime is 11817751007. The reversal of 11817750972 is 27905771811.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 3592563 + ... + 3595850.

It is an arithmetic number, because the mean of its divisors is an integer number (1157334654).

Almost surely, 2^11817750972 is an apocalyptic number.

11817750972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11817750972 is an abundant number, since it is smaller than the sum of its proper divisors (15958280724).

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

11817750972 is a wasteful number, since it uses less digits than its factorization.

11817750972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7188557 (or 7188555 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 48.

The spelling of 11817750972 in words is "eleven billion, eight hundred seventeen million, seven hundred fifty thousand, nine hundred seventy-two".