91796442090 has 32 divisors (see below), whose sum is σ = 222965822016. Its totient is φ = 24184122240.

The previous prime is 91796442047. The next prime is 91796442107. The reversal of 91796442090 is 9024469719.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18430531 + ... + 18435510.

It is an arithmetic number, because the mean of its divisors is an integer number (6967681938).

Almost surely, 2^91796442090 is an apocalyptic number.

91796442090 is an abundant number, since it is smaller than the sum of its proper divisors (131169379926).

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

91796442090 is a wasteful number, since it uses less digits than its factorization.

91796442090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36866134.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 91796442090 in words is "ninety-one billion, seven hundred ninety-six million, four hundred forty-two thousand, ninety".