11575989432 has 48 divisors (see below), whose sum is σ = 35830445040. Its totient is φ = 3307425408.

The previous prime is 11575989427. The next prime is 11575989473. The reversal of 11575989432 is 23498957511.

It is a happy number.

11575989432 is a `hidden beast` number, since 1 + 1 + 5 + 7 + 598 + 9 + 43 + 2 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 11483613 + ... + 11484620.

It is an arithmetic number, because the mean of its divisors is an integer number (746467605).

Almost surely, 2^11575989432 is an apocalyptic number.

11575989432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11575989432 is an abundant number, since it is smaller than the sum of its proper divisors (24254455608).

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

11575989432 is a wasteful number, since it uses less digits than its factorization.

11575989432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22968252 (or 22968245 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The spelling of 11575989432 in words is "eleven billion, five hundred seventy-five million, nine hundred eighty-nine thousand, four hundred thirty-two".