91564834382 has 16 divisors (see below), whose sum is σ = 157126705152. Its totient is φ = 39202467480.

The previous prime is 91564834367. The next prime is 91564834429. The reversal of 91564834382 is 28343846519.

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 7 ways as a sum of consecutive naturals, for example, 3285998 + ... + 3313745.

It is an arithmetic number, because the mean of its divisors is an integer number (9820419072).

Almost surely, 2^91564834382 is an apocalyptic number.

91564834382 is a deficient number, since it is larger than the sum of its proper divisors (65561870770).

91564834382 is a wasteful number, since it uses less digits than its factorization.

91564834382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6600743.

The product of its digits is 4976640, while the sum is 53.

The spelling of 91564834382 in words is "ninety-one billion, five hundred sixty-four million, eight hundred thirty-four thousand, three hundred eighty-two".