111992724612 has 36 divisors (see below), whose sum is σ = 283144683276. Its totient is φ = 37324056000.

The previous prime is 111992724589. The next prime is 111992724653. The reversal of 111992724612 is 216427299111.

111992724612 is a `hidden beast` number, since 1 + 1 + 1 + 9 + 9 + 2 + 7 + 24 + 612 = 666.

111992724612 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 93448821636 + 18543902976 = 305694^2 + 136176^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84723 + ... + 480794.

It is an arithmetic number, because the mean of its divisors is an integer number (7865130091).

Almost surely, 2^111992724612 is an apocalyptic number.

111992724612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111992724612 is an abundant number, since it is smaller than the sum of its proper divisors (171151958664).

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

111992724612 is a wasteful number, since it uses less digits than its factorization.

111992724612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571028 (or 571023 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The spelling of 111992724612 in words is "one hundred eleven billion, nine hundred ninety-two million, seven hundred twenty-four thousand, six hundred twelve".