111985858993178 has 8 divisors (see below), whose sum is σ = 167979384737472. Its totient is φ = 55992730747356.

The previous prime is 111985858993159. The next prime is 111985858993201. The reversal of 111985858993178 is 871399858589111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×111985858993178² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111985858993096 and 111985858993105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98669300 + ... + 99797807.

It is an arithmetic number, because the mean of its divisors is an integer number (20997423092184).

Almost surely, 2^{111985858993178} is an apocalyptic number.

111985858993178 is a deficient number, since it is larger than the sum of its proper divisors (55993525744294).

111985858993178 is a wasteful number, since it uses less digits than its factorization.

111985858993178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198749236.

The product of its digits is 1567641600, while the sum is 83.

The spelling of 111985858993178 in words is "one hundred eleven trillion, nine hundred eighty-five billion, eight hundred fifty-eight million, nine hundred ninety-three thousand, one hundred seventy-eight".