111165006564 has 36 divisors (see below), whose sum is σ = 281023863120. Its totient is φ = 37051912560.

The previous prime is 111165006559. The next prime is 111165006593. The reversal of 111165006564 is 465600561111.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 331567 + ... + 576425.

It is an arithmetic number, because the mean of its divisors is an integer number (7806218420).

Almost surely, 2^111165006564 is an apocalyptic number.

It is an amenable number.

111165006564 is an abundant number, since it is smaller than the sum of its proper divisors (169858856556).

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

111165006564 is a wasteful number, since it uses less digits than its factorization.

111165006564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257480 (or 257475 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

Adding to 111165006564 its reverse (465600561111), we get a palindrome (576765567675).

The spelling of 111165006564 in words is "one hundred eleven billion, one hundred sixty-five million, six thousand, five hundred sixty-four".