91790009179 has 16 divisors (see below), whose sum is σ = 102371031936. Its totient is φ = 81599918400.

The previous prime is 91790009167. The next prime is 91790009203. The reversal of 91790009179 is 97190009719.

It is a de Polignac number, because none of the positive numbers 2^k-91790009179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91790001179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353577 + ... + 555514.

It is an arithmetic number, because the mean of its divisors is an integer number (6398189496).

Almost surely, 2^91790009179 is an apocalyptic number.

91790009179 is a deficient number, since it is larger than the sum of its proper divisors (10581022757).

91790009179 is a wasteful number, since it uses less digits than its factorization.

91790009179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909306.

The product of its (nonzero) digits is 321489, while the sum is 52.

The spelling of 91790009179 in words is "ninety-one billion, seven hundred ninety million, nine thousand, one hundred seventy-nine".