111666163426 has 16 divisors (see below), whose sum is σ = 167949964800. Its totient is φ = 55683033120.

The previous prime is 111666163421. The next prime is 111666163439. The reversal of 111666163426 is 624361666111.

111666163426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (111666163421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140190 + ... + 1234246.

It is an arithmetic number, because the mean of its divisors is an integer number (10496872800).

Almost surely, 2^111666163426 is an apocalyptic number.

111666163426 is a deficient number, since it is larger than the sum of its proper divisors (56283801374).

111666163426 is an equidigital number, since it uses as much as digits as its factorization.

111666163426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95649.

The product of its digits is 186624, while the sum is 43.

The spelling of 111666163426 in words is "one hundred eleven billion, six hundred sixty-six million, one hundred sixty-three thousand, four hundred twenty-six".