91375023574 has 32 divisors (see below), whose sum is σ = 140239139040. Its totient is φ = 44641124352.

The previous prime is 91375023541. The next prime is 91375023577. The reversal of 91375023574 is 47532057319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91375023577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9124282 + ... + 9134290.

It is an arithmetic number, because the mean of its divisors is an integer number (4382473095).

Almost surely, 2^91375023574 is an apocalyptic number.

91375023574 is a deficient number, since it is larger than the sum of its proper divisors (48864115466).

91375023574 is a wasteful number, since it uses less digits than its factorization.

91375023574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10624.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 91375023574 in words is "ninety-one billion, three hundred seventy-five million, twenty-three thousand, five hundred seventy-four".