111156161157 has 12 divisors (see below), whose sum is σ = 161543925504. Its totient is φ = 73649480040.

The previous prime is 111156161153. The next prime is 111156161173. The reversal of 111156161157 is 751161651111.

111156161157 is a `hidden beast` number, since 1 + 11 + 15 + 616 + 1 + 15 + 7 = 666.

It is not a de Polignac number, because 111156161157 - 2² = 111156161153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111156161153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37884069 + ... + 37887002.

It is an arithmetic number, because the mean of its divisors is an integer number (13461993792).

Almost surely, 2^111156161157 is an apocalyptic number.

It is an amenable number.

111156161157 is a deficient number, since it is larger than the sum of its proper divisors (50387764347).

111156161157 is a wasteful number, since it uses less digits than its factorization.

111156161157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75771240 (or 75771237 counting only the distinct ones).

The product of its digits is 6300, while the sum is 36.

The spelling of 111156161157 in words is "one hundred eleven billion, one hundred fifty-six million, one hundred sixty-one thousand, one hundred fifty-seven".