91707802868 has 24 divisors (see below), whose sum is σ = 176457114624. Its totient is φ = 41357131200.

The previous prime is 91707802831. The next prime is 91707802883. The reversal of 91707802868 is 86820870719.

It is a super-2 number, since 2×91707802868² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8200193 + ... + 8211368.

It is an arithmetic number, because the mean of its divisors is an integer number (7352379776).

Almost surely, 2^91707802868 is an apocalyptic number.

It is an amenable number.

91707802868 is a deficient number, since it is larger than the sum of its proper divisors (84749311756).

91707802868 is a wasteful number, since it uses less digits than its factorization.

91707802868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16411703 (or 16411701 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 56.

The spelling of 91707802868 in words is "ninety-one billion, seven hundred seven million, eight hundred two thousand, eight hundred sixty-eight".