91974842976 has 24 divisors (see below), whose sum is σ = 241433963064. Its totient is φ = 30658280960.

The previous prime is 91974842963. The next prime is 91974843031. The reversal of 91974842976 is 67924847919.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479035545 + ... + 479035736.

It is an arithmetic number, because the mean of its divisors is an integer number (10059748461).

Almost surely, 2^91974842976 is an apocalyptic number.

91974842976 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

91974842976 is an abundant number, since it is smaller than the sum of its proper divisors (149459120088).

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

91974842976 is a wasteful number, since it uses less digits than its factorization.

91974842976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958071294 (or 958071286 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 66.

The spelling of 91974842976 in words is "ninety-one billion, nine hundred seventy-four million, eight hundred forty-two thousand, nine hundred seventy-six".