111666506163 has 16 divisors (see below), whose sum is σ = 149833975200. Its totient is φ = 73972362240.

The previous prime is 111666506141. The next prime is 111666506177. The reversal of 111666506163 is 361605666111.

It is not a de Polignac number, because 111666506163 - 2⁹ = 111666505651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111666504163) 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, 583683 + ... + 751011.

It is an arithmetic number, because the mean of its divisors is an integer number (9364623450).

Almost surely, 2^111666506163 is an apocalyptic number.

111666506163 is a deficient number, since it is larger than the sum of its proper divisors (38167469037).

111666506163 is a wasteful number, since it uses less digits than its factorization.

111666506163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168742.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 111666506163 in words is "one hundred eleven billion, six hundred sixty-six million, five hundred six thousand, one hundred sixty-three".