91513696960 has 56 divisors (see below), whose sum is σ = 249047995680. Its totient is φ = 31376123904.

The previous prime is 91513696919. The next prime is 91513696961. The reversal of 91513696960 is 6969631519.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (91513696961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20424925 + ... + 20429404.

Almost surely, 2^91513696960 is an apocalyptic number.

It is an amenable number.

91513696960 is an abundant number, since it is smaller than the sum of its proper divisors (157534298720).

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

91513696960 is a wasteful number, since it uses less digits than its factorization.

91513696960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40854353 (or 40854343 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 55.

The spelling of 91513696960 in words is "ninety-one billion, five hundred thirteen million, six hundred ninety-six thousand, nine hundred sixty".