91807725036 has 12 divisors (see below), whose sum is σ = 214218025112. Its totient is φ = 30602575008.

The previous prime is 91807725011. The next prime is 91807725059. The reversal of 91807725036 is 63052770819.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3825321865 + ... + 3825321888.

Almost surely, 2^91807725036 is an apocalyptic number.

It is an amenable number.

91807725036 is an abundant number, since it is smaller than the sum of its proper divisors (122410300076).

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

91807725036 is a wasteful number, since it uses less digits than its factorization.

91807725036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650643760 (or 7650643758 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 91807725036 in words is "ninety-one billion, eight hundred seven million, seven hundred twenty-five thousand, thirty-six".