111961187573648 has 80 divisors (see below), whose sum is σ = 254787979442304. Its totient is φ = 46660554040320.

The previous prime is 111961187573603. The next prime is 111961187573657. The reversal of 111961187573648 is 846375781169111.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38300015 + ... + 41119502.

Almost surely, 2^{111961187573648} is an apocalyptic number.

It is an amenable number.

111961187573648 is an abundant number, since it is smaller than the sum of its proper divisors (142826791868656).

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

111961187573648 is a wasteful number, since it uses less digits than its factorization.

111961187573648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79419880 (or 79419874 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 68.

The spelling of 111961187573648 in words is "one hundred eleven trillion, nine hundred sixty-one billion, one hundred eighty-seven million, five hundred seventy-three thousand, six hundred forty-eight".