491918824084 has 24 divisors (see below), whose sum is σ = 890333289216. Its totient is φ = 237568344000.

The previous prime is 491918824049. The next prime is 491918824093. The reversal of 491918824084 is 480428819194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3742582 + ... + 3871789.

It is an arithmetic number, because the mean of its divisors is an integer number (37097220384).

Almost surely, 2^491918824084 is an apocalyptic number.

It is an amenable number.

491918824084 is a deficient number, since it is larger than the sum of its proper divisors (398414465132).

491918824084 is a wasteful number, since it uses less digits than its factorization.

491918824084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7614927 (or 7614925 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 58.

The spelling of 491918824084 in words is "four hundred ninety-one billion, nine hundred eighteen million, eight hundred twenty-four thousand, eighty-four".