491249815704 has 48 divisors (see below), whose sum is σ = 1340039992200. Its totient is φ = 162571878144.

The previous prime is 491249815703. The next prime is 491249815709. The reversal of 491249815704 is 407518942194.

491249815704 is a `hidden beast` number, since 49 + 1 + 24 + 9 + 8 + 1 + 570 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491249815703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24532849 + ... + 24552864.

Almost surely, 2^491249815704 is an apocalyptic number.

It is an amenable number.

491249815704 is an abundant number, since it is smaller than the sum of its proper divisors (848790176496).

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

491249815704 is a wasteful number, since it uses less digits than its factorization.

491249815704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49085864 (or 49085857 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 491249815704 in words is "four hundred ninety-one billion, two hundred forty-nine million, eight hundred fifteen thousand, seven hundred four".