91168450056 has 96 divisors (see below), whose sum is σ = 248462042400. Its totient is φ = 30199530240.

The previous prime is 91168450039. The next prime is 91168450097. The reversal of 91168450056 is 65005486119.

91168450056 is a `hidden beast` number, since 9 + 1 + 16 + 84 + 500 + 56 = 666.

It is a super-3 number, since 3×91168450056³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 91168449993 and 91168450020.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9327540 + ... + 9337308.

It is an arithmetic number, because the mean of its divisors is an integer number (2588146275).

Almost surely, 2^91168450056 is an apocalyptic number.

It is an amenable number.

91168450056 is an abundant number, since it is smaller than the sum of its proper divisors (157293592344).

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

91168450056 is a wasteful number, since it uses less digits than its factorization.

91168450056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10579 (or 10572 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 91168450056 in words is "ninety-one billion, one hundred sixty-eight million, four hundred fifty thousand, fifty-six".