491575837480 has 128 divisors (see below), whose sum is σ = 1405199738880. Its totient is φ = 150557045760.

The previous prime is 491575837471. The next prime is 491575837517. The reversal of 491575837480 is 84738575194.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2065359 + ... + 2291038.

It is an arithmetic number, because the mean of its divisors is an integer number (10978122960).

Almost surely, 2^491575837480 is an apocalyptic number.

491575837480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491575837480 is an abundant number, since it is smaller than the sum of its proper divisors (913623901400).

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

491575837480 is a wasteful number, since it uses less digits than its factorization.

491575837480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4356459 (or 4356455 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 491575837480 in words is "four hundred ninety-one billion, five hundred seventy-five million, eight hundred thirty-seven thousand, four hundred eighty".