91590986952 has 128 divisors (see below), whose sum is σ = 269444505600. Its totient is φ = 28766954304.

The previous prime is 91590986881. The next prime is 91590986969. The reversal of 91590986952 is 25968909519.

It is a self number, because there is not a number n which added to its sum of digits gives 91590986952.

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 31 ways as a sum of consecutive naturals, for example, 195273 + ... + 470439.

It is an arithmetic number, because the mean of its divisors is an integer number (2105035200).

Almost surely, 2^91590986952 is an apocalyptic number.

91590986952 is a gapful number since it is divisible by the number (92) 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 91590986952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134722252800).

91590986952 is an abundant number, since it is smaller than the sum of its proper divisors (177853518648).

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

91590986952 is a wasteful number, since it uses less digits than its factorization.

91590986952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275272 (or 275262 counting only the distinct ones).

The product of its (nonzero) digits is 15746400, while the sum is 63.

The spelling of 91590986952 in words is "ninety-one billion, five hundred ninety million, nine hundred eighty-six thousand, nine hundred fifty-two".