11993653872 has 30 divisors (see below), whose sum is σ = 33565573392. Its totient is φ = 3997884576.

The previous prime is 11993653843. The next prime is 11993653907. The reversal of 11993653872 is 27835639911.

11993653872 is a `hidden beast` number, since 1 + 1 + 9 + 9 + 36 + 538 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41644488 + ... + 41644775.

Almost surely, 2^11993653872 is an apocalyptic number.

11993653872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11993653872 is an abundant number, since it is smaller than the sum of its proper divisors (21571919520).

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

11993653872 is a wasteful number, since it uses less digits than its factorization.

11993653872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83289277 (or 83289268 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The spelling of 11993653872 in words is "eleven billion, nine hundred ninety-three million, six hundred fifty-three thousand, eight hundred seventy-two".