91062531072 has 88 divisors (see below), whose sum is σ = 269683243200. Its totient is φ = 30354167808.

The previous prime is 91062531061. The next prime is 91062531101. The reversal of 91062531072 is 27013526019.

91062531072 is a `hidden beast` number, since 9 + 10 + 625 + 3 + 10 + 7 + 2 = 666.

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

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 7 ways as a sum of consecutive naturals, for example, 1619172 + ... + 1674467.

Almost surely, 2^91062531072 is an apocalyptic number.

It is an amenable number.

91062531072 is an abundant number, since it is smaller than the sum of its proper divisors (178620712128).

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

91062531072 is a wasteful number, since it uses less digits than its factorization.

91062531072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293668 (or 3293644 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 91062531072 in words is "ninety-one billion, sixty-two million, five hundred thirty-one thousand, seventy-two".