91796884538687 has 8 divisors (see below), whose sum is σ = 91832265102336. Its totient is φ = 91761505573752.

The previous prime is 91796884538669. The next prime is 91796884538713. The reversal of 91796884538687 is 78683548869719.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91796884538687 - 2⁸ = 91796884538431 is a prime.

It is a super-2 number, since 2×91796884538687² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91796884538587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121612478 + ... + 122364980.

It is an arithmetic number, because the mean of its divisors is an integer number (11479033137792).

Almost surely, 2^{91796884538687} is an apocalyptic number.

91796884538687 is a deficient number, since it is larger than the sum of its proper divisors (35380563649).

91796884538687 is a wasteful number, since it uses less digits than its factorization.

91796884538687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799357.

The product of its digits is 35115171840, while the sum is 89.

The spelling of 91796884538687 in words is "ninety-one trillion, seven hundred ninety-six billion, eight hundred eighty-four million, five hundred thirty-eight thousand, six hundred eighty-seven".