91996168952088 has 96 divisors (see below), whose sum is σ = 261497366020800. Its totient is φ = 30295927071648.

The previous prime is 91996168952059. The next prime is 91996168952137. The reversal of 91996168952088 is 88025986169919.

91996168952088 is a `hidden beast` number, since 9 + 1 + 9 + 9 + 6 + 1 + 6 + 8 + 9 + 520 + 88 = 666.

It is a super-2 number, since 2×91996168952088² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 91996168951998 and 91996168952016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 284917758 + ... + 285240461.

It is an arithmetic number, because the mean of its divisors is an integer number (2723930896050).

Almost surely, 2^{91996168952088} is an apocalyptic number.

It is an amenable number.

91996168952088 is an abundant number, since it is smaller than the sum of its proper divisors (169501197068712).

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

91996168952088 is a wasteful number, since it uses less digits than its factorization.

91996168952088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570158323 (or 570158307 counting only the distinct ones).

The product of its (nonzero) digits is 1209323520, while the sum is 81.

The spelling of 91996168952088 in words is "ninety-one trillion, nine hundred ninety-six billion, one hundred sixty-eight million, nine hundred fifty-two thousand, eighty-eight".