111666368827 has 16 divisors (see below), whose sum is σ = 127525134240. Its totient is φ = 96864625152.

The previous prime is 111666368819. The next prime is 111666368831. The reversal of 111666368827 is 728863666111.

It is a cyclic number.

It is not a de Polignac number, because 111666368827 - 2³ = 111666368819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111666368837) 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, 242577 + ... + 531202.

It is an arithmetic number, because the mean of its divisors is an integer number (7970320890).

Almost surely, 2^111666368827 is an apocalyptic number.

111666368827 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

111666368827 is a deficient number, since it is larger than the sum of its proper divisors (15858765413).

111666368827 is a wasteful number, since it uses less digits than its factorization.

111666368827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774462.

The product of its digits is 3483648, while the sum is 55.

The spelling of 111666368827 in words is "one hundred eleven billion, six hundred sixty-six million, three hundred sixty-eight thousand, eight hundred twenty-seven".