491579275158 has 96 divisors (see below), whose sum is σ = 1102919860224. Its totient is φ = 158152067136.

The previous prime is 491579275141. The next prime is 491579275177. The reversal of 491579275158 is 851572975194.

491579275158 is a `hidden beast` number, since 4 + 9 + 1 + 579 + 2 + 7 + 5 + 1 + 58 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 491579275095 and 491579275104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17929116 + ... + 17956512.

It is an arithmetic number, because the mean of its divisors is an integer number (11488748544).

Almost surely, 2^491579275158 is an apocalyptic number.

491579275158 is an abundant number, since it is smaller than the sum of its proper divisors (611340585066).

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

491579275158 is a wasteful number, since it uses less digits than its factorization.

491579275158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27746 (or 27743 counting only the distinct ones).

The product of its digits is 31752000, while the sum is 63.

The spelling of 491579275158 in words is "four hundred ninety-one billion, five hundred seventy-nine million, two hundred seventy-five thousand, one hundred fifty-eight".