91361591936 has 32 divisors (see below), whose sum is σ = 182030587200. Its totient is φ = 45675483904.

The previous prime is 91361591929. The next prime is 91361591953. The reversal of 91361591936 is 63919516319.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210475 + ... + 1283733.

It is an arithmetic number, because the mean of its divisors is an integer number (5688455850).

Almost surely, 2^91361591936 is an apocalyptic number.

It is an amenable number.

91361591936 is a deficient number, since it is larger than the sum of its proper divisors (90668995264).

91361591936 is an equidigital number, since it uses as much as digits as its factorization.

91361591936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83016 (or 83004 counting only the distinct ones).

The product of its digits is 1180980, while the sum is 53.

The spelling of 91361591936 in words is "ninety-one billion, three hundred sixty-one million, five hundred ninety-one thousand, nine hundred thirty-six".