111607206161 has 4 divisors (see below), whose sum is σ = 121753315824. Its totient is φ = 101461096500.

The previous prime is 111607206157. The next prime is 111607206197. The reversal of 111607206161 is 161602706111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111607206161 - 2² = 111607206157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111607206131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5073054815 + ... + 5073054836.

It is an arithmetic number, because the mean of its divisors is an integer number (30438328956).

Almost surely, 2^111607206161 is an apocalyptic number.

111607206161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111607206161 is a deficient number, since it is larger than the sum of its proper divisors (10146109663).

111607206161 is a wasteful number, since it uses less digits than its factorization.

111607206161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10146109662.

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 111607206161 in words is "one hundred eleven billion, six hundred seven million, two hundred six thousand, one hundred sixty-one".