91684462020 has 48 divisors (see below), whose sum is σ = 256730042688. Its totient is φ = 24447899520.

The previous prime is 91684461989. The next prime is 91684462043. The reversal of 91684462020 is 2026448619.

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 15 ways as a sum of consecutive naturals, for example, 1800510 + ... + 1850730.

It is an arithmetic number, because the mean of its divisors is an integer number (5348542556).

Almost surely, 2^91684462020 is an apocalyptic number.

It is an amenable number.

91684462020 is an abundant number, since it is smaller than the sum of its proper divisors (165045580668).

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

91684462020 is a wasteful number, since it uses less digits than its factorization.

91684462020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80660 (or 80658 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 91684462020 in words is "ninety-one billion, six hundred eighty-four million, four hundred sixty-two thousand, twenty".