113221978368 has 72 divisors (see below), whose sum is σ = 301497979776. Its totient is φ = 37720320000.

The previous prime is 113221978349. The next prime is 113221978421. The reversal of 113221978368 is 863879122311.

It is a self number, because there is not a number n which added to its sum of digits gives 113221978368.

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, 1421193 + ... + 1498743.

Almost surely, 2^113221978368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113221978368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150748989888).

113221978368 is an abundant number, since it is smaller than the sum of its proper divisors (188276001408).

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

113221978368 is an equidigital number, since it uses as much as digits as its factorization.

113221978368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79471 (or 79457 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The spelling of 113221978368 in words is "one hundred thirteen billion, two hundred twenty-one million, nine hundred seventy-eight thousand, three hundred sixty-eight".