491044538748 has 24 divisors (see below), whose sum is σ = 1172416419328. Its totient is φ = 159874965936.

The previous prime is 491044538701. The next prime is 491044538759. The reversal of 491044538748 is 847835440194.

It is a super-2 number, since 2×491044538748² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475817836 + ... + 475818867.

Almost surely, 2^491044538748 is an apocalyptic number.

It is an amenable number.

491044538748 is an abundant number, since it is smaller than the sum of its proper divisors (681371880580).

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

491044538748 is a wasteful number, since it uses less digits than its factorization.

491044538748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951636753 (or 951636751 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 57.

The spelling of 491044538748 in words is "four hundred ninety-one billion, forty-four million, five hundred thirty-eight thousand, seven hundred forty-eight".