111565053664 has 96 divisors (see below), whose sum is σ = 230980559040. Its totient is φ = 52970803200.

The previous prime is 111565053653. The next prime is 111565053673. The reversal of 111565053664 is 466350565111.

It is a super-2 number, since 2×111565053664² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111565053664.

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, 30372532 + ... + 30376204.

It is an arithmetic number, because the mean of its divisors is an integer number (2406047490).

Almost surely, 2^111565053664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111565053664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115490279520).

111565053664 is an abundant number, since it is smaller than the sum of its proper divisors (119415505376).

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

111565053664 is a wasteful number, since it uses less digits than its factorization.

111565053664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244 (or 4236 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 111565053664 in words is "one hundred eleven billion, five hundred sixty-five million, fifty-three thousand, six hundred sixty-four".