111642204051 has 96 divisors (see below), whose sum is σ = 193709887488. Its totient is φ = 60618792960.

The previous prime is 111642204049. The next prime is 111642204077. The reversal of 111642204051 is 150402246111.

111642204051 is a `hidden beast` number, since 1 + 11 + 642 + 2 + 0 + 4 + 0 + 5 + 1 = 666.

It is not a de Polignac number, because 111642204051 - 2¹ = 111642204049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111642200051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 46189195 + ... + 46191611.

It is an arithmetic number, because the mean of its divisors is an integer number (2017811328).

Almost surely, 2^111642204051 is an apocalyptic number.

111642204051 is a deficient number, since it is larger than the sum of its proper divisors (82067683437).

111642204051 is a wasteful number, since it uses less digits than its factorization.

111642204051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881 (or 2878 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 111642204051 in words is "one hundred eleven billion, six hundred forty-two million, two hundred four thousand, fifty-one".