491808676301568 has 216 divisors, whose sum is σ = 1483799131418240. Its totient is φ = 156474698711040.

The previous prime is 491808676301563. The next prime is 491808676301609. The reversal of 491808676301568 is 865103676808194.

491808676301568 is a `hidden beast` number, since 4 + 9 + 180 + 86 + 7 + 6 + 301 + 5 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 491808676301496 and 491808676301505.

It is not an unprimeable number, because it can be changed into a prime (491808676301563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41948803 + ... + 52376706.

Almost surely, 2^{491808676301568} is an apocalyptic number.

491808676301568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

491808676301568 is an abundant number, since it is smaller than the sum of its proper divisors (991990455116672).

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

491808676301568 is a wasteful number, since it uses less digits than its factorization.

491808676301568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94325635 (or 94325618 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 72.

The spelling of 491808676301568 in words is "four hundred ninety-one trillion, eight hundred eight billion, six hundred seventy-six million, three hundred one thousand, five hundred sixty-eight".