111165170013 has 16 divisors (see below), whose sum is σ = 164706926400. Its totient is φ = 74102109840.

The previous prime is 111165169987. The next prime is 111165170023. The reversal of 111165170013 is 310071561111.

111165170013 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 651 + 7 + 0 + 0 + 1 + 3 = 666.

It is not a de Polignac number, because 111165170013 - 2⁸ = 111165169757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111165170023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37858 + ... + 473036.

It is an arithmetic number, because the mean of its divisors is an integer number (10294182900).

Almost surely, 2^111165170013 is an apocalyptic number.

It is an amenable number.

111165170013 is a deficient number, since it is larger than the sum of its proper divisors (53541756387).

111165170013 is an equidigital number, since it uses as much as digits as its factorization.

111165170013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444649 (or 444643 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 27.

The spelling of 111165170013 in words is "one hundred eleven billion, one hundred sixty-five million, one hundred seventy thousand, thirteen".