91964807984 has 30 divisors (see below), whose sum is σ = 207272725884. Its totient is φ = 39413488800.

The previous prime is 91964807971. The next prime is 91964807993. The reversal of 91964807984 is 48970846919.

It is a super-3 number, since 3×91964807984³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91964807984.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58650242 + ... + 58651809.

Almost surely, 2^91964807984 is an apocalyptic number.

It is an amenable number.

91964807984 is an abundant number, since it is smaller than the sum of its proper divisors (115307917900).

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

91964807984 is a wasteful number, since it uses less digits than its factorization.

91964807984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117302073 (or 117302060 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 65.

Adding to 91964807984 its sum of digits (65), we get a square (91964808049 = 303257²).

The spelling of 91964807984 in words is "ninety-one billion, nine hundred sixty-four million, eight hundred seven thousand, nine hundred eighty-four".