111505106656 has 48 divisors (see below), whose sum is σ = 232766548560. Its totient is φ = 52432634880.

The previous prime is 111505106597. The next prime is 111505106659. The reversal of 111505106656 is 656601505111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111505106659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586035 + ... + 752626.

It is an arithmetic number, because the mean of its divisors is an integer number (4849303095).

Almost surely, 2^111505106656 is an apocalyptic number.

111505106656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

111505106656 is an abundant number, since it is smaller than the sum of its proper divisors (121261441904).

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

111505106656 is a wasteful number, since it uses less digits than its factorization.

111505106656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338827 (or 1338819 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 111505106656 in words is "one hundred eleven billion, five hundred five million, one hundred six thousand, six hundred fifty-six".