111355500656 has 80 divisors (see below), whose sum is σ = 240576343200. Its totient is φ = 49621745664.

The previous prime is 111355500647. The next prime is 111355500709. The reversal of 111355500656 is 656005553111.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

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, 16684136 + ... + 16690808.

It is an arithmetic number, because the mean of its divisors is an integer number (3007204290).

Almost surely, 2^111355500656 is an apocalyptic number.

111355500656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111355500656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120288171600).

111355500656 is an abundant number, since it is smaller than the sum of its proper divisors (129220842544).

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

111355500656 is a wasteful number, since it uses less digits than its factorization.

111355500656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9946 (or 9940 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 38.

The spelling of 111355500656 in words is "one hundred eleven billion, three hundred fifty-five million, five hundred thousand, six hundred fifty-six".