11916610572 has 24 divisors (see below), whose sum is σ = 28556923696. Its totient is φ = 3864846528.

The previous prime is 11916610567. The next prime is 11916610613. The reversal of 11916610572 is 27501661911.

It is a self number, because there is not a number n which added to its sum of digits gives 11916610572.

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, 13419163 + ... + 13420050.

Almost surely, 2^11916610572 is an apocalyptic number.

11916610572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11916610572 is an abundant number, since it is smaller than the sum of its proper divisors (16640313124).

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

11916610572 is a wasteful number, since it uses less digits than its factorization.

11916610572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26839257 (or 26839255 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The spelling of 11916610572 in words is "eleven billion, nine hundred sixteen million, six hundred ten thousand, five hundred seventy-two".