91140757584 has 40 divisors (see below), whose sum is σ = 238092439680. Its totient is φ = 30038899968.

The previous prime is 91140757571. The next prime is 91140757621. The reversal of 91140757584 is 48575704119.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10662952 + ... + 10671495.

It is an arithmetic number, because the mean of its divisors is an integer number (5952310992).

Almost surely, 2^91140757584 is an apocalyptic number.

It is an amenable number.

91140757584 is an abundant number, since it is smaller than the sum of its proper divisors (146951682096).

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

91140757584 is a wasteful number, since it uses less digits than its factorization.

91140757584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21334547 (or 21334541 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 51.

The spelling of 91140757584 in words is "ninety-one billion, one hundred forty million, seven hundred fifty-seven thousand, five hundred eighty-four".