112166685881 has 4 divisors (see below), whose sum is σ = 112209063552. Its totient is φ = 112124308212.

The previous prime is 112166685847. The next prime is 112166685889. The reversal of 112166685881 is 188586661211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188586661211 = 13 ⋅14506666247.

It is a cyclic number.

It is not a de Polignac number, because 112166685881 - 2⁶ = 112166685817 is a prime.

It is a super-2 number, since 2×112166685881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112166685889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21184865 + ... + 21190158.

It is an arithmetic number, because the mean of its divisors is an integer number (28052265888).

Almost surely, 2^112166685881 is an apocalyptic number.

It is an amenable number.

112166685881 is a deficient number, since it is larger than the sum of its proper divisors (42377671).

112166685881 is an equidigital number, since it uses as much as digits as its factorization.

112166685881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42377670.

The product of its digits is 1105920, while the sum is 53.

The spelling of 112166685881 in words is "one hundred twelve billion, one hundred sixty-six million, six hundred eighty-five thousand, eight hundred eighty-one".