491159912488 has 32 divisors (see below), whose sum is σ = 1074878841600. Its totient is φ = 206018442432.

The previous prime is 491159912443. The next prime is 491159912489. The reversal of 491159912488 is 884219951194.

It is not an unprimeable number, because it can be changed into a prime (491159912489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93302823 + ... + 93308086.

It is an arithmetic number, because the mean of its divisors is an integer number (33589963800).

Almost surely, 2^491159912488 is an apocalyptic number.

It is an amenable number.

491159912488 is an abundant number, since it is smaller than the sum of its proper divisors (583718929112).

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

491159912488 is a wasteful number, since it uses less digits than its factorization.

491159912488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186610969 (or 186610965 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 61.

The spelling of 491159912488 in words is "four hundred ninety-one billion, one hundred fifty-nine million, nine hundred twelve thousand, four hundred eighty-eight".