91536213132 has 192 divisors, whose sum is σ = 307454694400. Its totient is φ = 22870771200.

The previous prime is 91536213059. The next prime is 91536213157. The reversal of 91536213132 is 23131263519.

91536213132 is a `hidden beast` number, since 9 + 15 + 3 + 621 + 3 + 13 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58369 + ... + 431832.

Almost surely, 2^91536213132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91536213132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153727347200).

91536213132 is an abundant number, since it is smaller than the sum of its proper divisors (215918481268).

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

91536213132 is a wasteful number, since it uses less digits than its factorization.

91536213132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490253 (or 490245 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The spelling of 91536213132 in words is "ninety-one billion, five hundred thirty-six million, two hundred thirteen thousand, one hundred thirty-two".