111615656140 has 12 divisors (see below), whose sum is σ = 234392877936. Its totient is φ = 44646262448.

The previous prime is 111615656137. The next prime is 111615656177. The reversal of 111615656140 is 41656516111.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 111615656140.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2790391384 + ... + 2790391423.

It is an arithmetic number, because the mean of its divisors is an integer number (19532739828).

Almost surely, 2^111615656140 is an apocalyptic number.

111615656140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111615656140 is an abundant number, since it is smaller than the sum of its proper divisors (122777221796).

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

111615656140 is a wasteful number, since it uses less digits than its factorization.

111615656140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580782816 (or 5580782814 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 111615656140 in words is "one hundred eleven billion, six hundred fifteen million, six hundred fifty-six thousand, one hundred forty".