111111099999868 has 48 divisors (see below), whose sum is σ = 209458933286400. Its totient is φ = 51406840235520.

The previous prime is 111111099999859. The next prime is 111111099999869. The reversal of 111111099999868 is 868999990111111.

It is a Smith number, since the sum of its digits (73) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 111111099999868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111099999869) 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, 29922453 + ... + 33430156.

It is an arithmetic number, because the mean of its divisors is an integer number (4363727776800).

Almost surely, 2^{111111099999868} is an apocalyptic number.

It is an amenable number.

111111099999868 is a deficient number, since it is larger than the sum of its proper divisors (98347833286532).

111111099999868 is a wasteful number, since it uses less digits than its factorization.

111111099999868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63353170 (or 63353168 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 73.

The spelling of 111111099999868 in words is "one hundred eleven trillion, one hundred eleven billion, ninety-nine million, nine hundred ninety-nine thousand, eight hundred sixty-eight".