91937629264 has 40 divisors (see below), whose sum is σ = 191862798120. Its totient is φ = 42425806848.

The previous prime is 91937629253. The next prime is 91937629279. The reversal of 91937629264 is 46292673919.

It can be written as a sum of positive squares in 4 ways, for example, as 16587379264 + 75350250000 = 128792^2 + 274500^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91937629199 and 91937629208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1368492 + ... + 1434100.

It is an arithmetic number, because the mean of its divisors is an integer number (4796569953).

Almost surely, 2^91937629264 is an apocalyptic number.

It is an amenable number.

91937629264 is an abundant number, since it is smaller than the sum of its proper divisors (99925168856).

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

91937629264 is a wasteful number, since it uses less digits than its factorization.

91937629264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72367 (or 72361 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 58.

The spelling of 91937629264 in words is "ninety-one billion, nine hundred thirty-seven million, six hundred twenty-nine thousand, two hundred sixty-four".