491720113404 has 60 divisors (see below), whose sum is σ = 1384334557144. Its totient is φ = 151298495136.

The previous prime is 491720113369. The next prime is 491720113421. The reversal of 491720113404 is 404311027194.

491720113404 is a `hidden beast` number, since 49 + 1 + 7 + 201 + 1 + 3 + 404 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 58367122 + ... + 58375545.

Almost surely, 2^491720113404 is an apocalyptic number.

It is an amenable number.

491720113404 is an abundant number, since it is smaller than the sum of its proper divisors (892614443740).

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

491720113404 is a wasteful number, since it uses less digits than its factorization.

491720113404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116742696 (or 116742685 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 491720113404 in words is "four hundred ninety-one billion, seven hundred twenty million, one hundred thirteen thousand, four hundred four".