11665686372 has 24 divisors (see below), whose sum is σ = 27362452992. Its totient is φ = 3868202400.

The previous prime is 11665686359. The next prime is 11665686391. The reversal of 11665686372 is 27368656611.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2542579 + ... + 2547162.

It is an arithmetic number, because the mean of its divisors is an integer number (1140102208).

Almost surely, 2^11665686372 is an apocalyptic number.

11665686372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11665686372 is an abundant number, since it is smaller than the sum of its proper divisors (15696766620).

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

11665686372 is a wasteful number, since it uses less digits than its factorization.

11665686372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5089939 (or 5089937 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The spelling of 11665686372 in words is "eleven billion, six hundred sixty-five million, six hundred eighty-six thousand, three hundred seventy-two".