91602478807 has 12 divisors (see below), whose sum is σ = 106570739016. Its totient is φ = 78507013200.

The previous prime is 91602478733. The next prime is 91602478969. The reversal of 91602478807 is 70887420619.

It is not a de Polignac number, because 91602478807 - 2³¹ = 89454995159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91602478307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318432 + ... + 533482.

It is an arithmetic number, because the mean of its divisors is an integer number (8880894918).

Almost surely, 2^91602478807 is an apocalyptic number.

91602478807 is a deficient number, since it is larger than the sum of its proper divisors (14968260209).

91602478807 is a wasteful number, since it uses less digits than its factorization.

91602478807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223758 (or 223751 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 91602478807 in words is "ninety-one billion, six hundred two million, four hundred seventy-eight thousand, eight hundred seven".