91345509204 has 48 divisors (see below), whose sum is σ = 219067853760. Its totient is φ = 29612816640.

The previous prime is 91345509191. The next prime is 91345509253. The reversal of 91345509204 is 40290554319.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635914 + ... + 766209.

It is an arithmetic number, because the mean of its divisors is an integer number (4563913620).

Almost surely, 2^91345509204 is an apocalyptic number.

It is an amenable number.

91345509204 is an abundant number, since it is smaller than the sum of its proper divisors (127722344556).

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

91345509204 is a wasteful number, since it uses less digits than its factorization.

91345509204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402280 (or 1402278 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 91345509204 in words is "ninety-one billion, three hundred forty-five million, five hundred nine thousand, two hundred four".