91916398601 has 8 divisors (see below), whose sum is σ = 91983877440. Its totient is φ = 91848950352.

The previous prime is 91916398597. The next prime is 91916398603. The reversal of 91916398601 is 10689361919.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91916398601 - 2² = 91916398597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91916398603) 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, 10394540 + ... + 10403378.

It is an arithmetic number, because the mean of its divisors is an integer number (11497984680).

Almost surely, 2^91916398601 is an apocalyptic number.

It is an amenable number.

91916398601 is a deficient number, since it is larger than the sum of its proper divisors (67478839).

91916398601 is a wasteful number, since it uses less digits than its factorization.

91916398601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15295.

The product of its (nonzero) digits is 629856, while the sum is 53.

The spelling of 91916398601 in words is "ninety-one billion, nine hundred sixteen million, three hundred ninety-eight thousand, six hundred one".