15885813132 has 360 divisors, whose sum is σ = 52303633200. Its totient is φ = 4039870464.

The previous prime is 15885813107. The next prime is 15885813221. The reversal of 15885813132 is 23131858851.

15885813132 is a `hidden beast` number, since 1 + 5 + 8 + 8 + 581 + 31 + 32 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 27918544 + ... + 27919112.

It is an arithmetic number, because the mean of its divisors is an integer number (145287870).

Almost surely, 2^15885813132 is an apocalyptic number.

15885813132 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 15885813132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26151816600).

15885813132 is an abundant number, since it is smaller than the sum of its proper divisors (36417820068).

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

15885813132 is a wasteful number, since it uses less digits than its factorization.

15885813132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 617 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The spelling of 15885813132 in words is "fifteen billion, eight hundred eighty-five million, eight hundred thirteen thousand, one hundred thirty-two".