111299635456 has 81 divisors (see below), whose sum is σ = 230409977161. Its totient is φ = 53656128512.

The previous prime is 111299635439. The next prime is 111299635481. The reversal of 111299635456 is 654536992111.

The square root of 111299635456 is 333616.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 58362829056 + 52936806400 = 241584^2 + 230080^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 154797465 + ... + 154798183.

Almost surely, 2^111299635456 is an apocalyptic number.

111299635456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

111299635456 is the 333616-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111299635456

111299635456 is an abundant number, since it is smaller than the sum of its proper divisors (119110341705).

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

111299635456 is an frugal number, since it uses more digits than its factorization.

111299635456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 750 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 52.

The spelling of 111299635456 in words is "one hundred eleven billion, two hundred ninety-nine million, six hundred thirty-five thousand, four hundred fifty-six".