491524900068 has 24 divisors (see below), whose sum is σ = 1147037327968. Its totient is φ = 163820791296.

The previous prime is 491524900043. The next prime is 491524900081. The reversal of 491524900068 is 860009425194.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2506846 + ... + 2695797.

Almost surely, 2^491524900068 is an apocalyptic number.

It is an amenable number.

491524900068 is an abundant number, since it is smaller than the sum of its proper divisors (655512427900).

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

491524900068 is a wasteful number, since it uses less digits than its factorization.

491524900068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210523 (or 5210521 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 491524900068 in words is "four hundred ninety-one billion, five hundred twenty-four million, nine hundred thousand, sixty-eight".