91091836382 has 16 divisors (see below), whose sum is σ = 146542977360. Its totient is φ = 42334636032.

The previous prime is 91091836369. The next prime is 91091836441. The reversal of 91091836382 is 28363819019.

It is a self number, because there is not a number n which added to its sum of digits gives 91091836382.

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, 22612643 + ... + 22616670.

It is an arithmetic number, because the mean of its divisors is an integer number (9158936085).

Almost surely, 2^91091836382 is an apocalyptic number.

91091836382 is a deficient number, since it is larger than the sum of its proper divisors (55451140978).

91091836382 is a wasteful number, since it uses less digits than its factorization.

91091836382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45229387.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 91091836382 in words is "ninety-one billion, ninety-one million, eight hundred thirty-six thousand, three hundred eighty-two".