111491902016874 has 12 divisors (see below), whose sum is σ = 241565787703266. Its totient is φ = 37163967338952.

The previous prime is 111491902016731. The next prime is 111491902016941. The reversal of 111491902016874 is 478610209194111.

111491902016874 is a `hidden beast` number, since 1 + 1 + 1 + 491 + 9 + 0 + 20 + 1 + 68 + 74 = 666.

It can be written as a sum of positive squares in only one way, i.e., 62357760336249 + 49134141680625 = 7896693^2 + 7009575^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111491902016874.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3096997278229 + ... + 3096997278264.

Almost surely, 2^{111491902016874} is an apocalyptic number.

111491902016874 is an abundant number, since it is smaller than the sum of its proper divisors (130073885686392).

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

111491902016874 is a wasteful number, since it uses less digits than its factorization.

111491902016874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6193994556501 (or 6193994556498 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 54.

The spelling of 111491902016874 in words is "one hundred eleven trillion, four hundred ninety-one billion, nine hundred two million, sixteen thousand, eight hundred seventy-four".