11615868432 has 120 divisors (see below), whose sum is σ = 37179296960. Its totient is φ = 3316412160.

The previous prime is 11615868421. The next prime is 11615868449. The reversal of 11615868432 is 23486851611.

11615868432 is a `hidden beast` number, since 1 + 1 + 6 + 158 + 68 + 432 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1751619 + ... + 1758237.

Almost surely, 2^11615868432 is an apocalyptic number.

11615868432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11615868432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18589648480).

11615868432 is an abundant number, since it is smaller than the sum of its proper divisors (25563428528).

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

11615868432 is a wasteful number, since it uses less digits than its factorization.

11615868432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8381 (or 8372 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The spelling of 11615868432 in words is "eleven billion, six hundred fifteen million, eight hundred sixty-eight thousand, four hundred thirty-two".