91995755008 has 20 divisors (see below), whose sum is σ = 183811831830. Its totient is φ = 45997877248.

The previous prime is 91995754997. The next prime is 91995755081. The reversal of 91995755008 is 80055759919.

It can be written as a sum of positive squares in only one way, i.e., 91610339584 + 385415424 = 302672^2 + 19632^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89839093 + ... + 89840116.

Almost surely, 2^91995755008 is an apocalyptic number.

It is an amenable number.

91995755008 is a deficient number, since it is larger than the sum of its proper divisors (91816076822).

91995755008 is an equidigital number, since it uses as much as digits as its factorization.

91995755008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179679227 (or 179679211 counting only the distinct ones).

The product of its (nonzero) digits is 5103000, while the sum is 58.

The spelling of 91995755008 in words is "ninety-one billion, nine hundred ninety-five million, seven hundred fifty-five thousand, eight".