91470663568 has 40 divisors (see below), whose sum is σ = 177605078976. Its totient is φ = 45637200000.

The previous prime is 91470663527. The next prime is 91470663623. The reversal of 91470663568 is 86536607419.

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, 25245405 + ... + 25249027.

Almost surely, 2^91470663568 is an apocalyptic number.

It is an amenable number.

91470663568 is a deficient number, since it is larger than the sum of its proper divisors (86134415408).

91470663568 is a wasteful number, since it uses less digits than its factorization.

91470663568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583 (or 6577 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 91470663568 in words is "ninety-one billion, four hundred seventy million, six hundred sixty-three thousand, five hundred sixty-eight".