111994979894 has 32 divisors (see below), whose sum is σ = 202159929600. Its totient is φ = 45457308000.

The previous prime is 111994979869. The next prime is 111994979917. The reversal of 111994979894 is 498979499111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800012 + ... + 929520.

It is an arithmetic number, because the mean of its divisors is an integer number (6317497800).

Almost surely, 2^111994979894 is an apocalyptic number.

111994979894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

111994979894 is a deficient number, since it is larger than the sum of its proper divisors (90164949706).

111994979894 is a wasteful number, since it uses less digits than its factorization.

111994979894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132788.

The product of its digits is 52907904, while the sum is 71.

The spelling of 111994979894 in words is "one hundred eleven billion, nine hundred ninety-four million, nine hundred seventy-nine thousand, eight hundred ninety-four".