91767685008 has 20 divisors (see below), whose sum is σ = 237066519728. Its totient is φ = 30589228320.

The previous prime is 91767685007. The next prime is 91767685013. The reversal of 91767685008 is 80058676719.

It is not an unprimeable number, because it can be changed into a prime (91767685001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 955913338 + ... + 955913433.

Almost surely, 2^91767685008 is an apocalyptic number.

It is an amenable number.

91767685008 is an abundant number, since it is smaller than the sum of its proper divisors (145298834720).

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

91767685008 is a wasteful number, since it uses less digits than its factorization.

91767685008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911826782 (or 1911826776 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 57.

The spelling of 91767685008 in words is "ninety-one billion, seven hundred sixty-seven million, six hundred eighty-five thousand, eight".