111155712855 has 24 divisors (see below), whose sum is σ = 195487075056. Its totient is φ = 53893678080.

The previous prime is 111155712841. The next prime is 111155712887. The reversal of 111155712855 is 558217551111.

It is not a de Polignac number, because 111155712855 - 2⁴ = 111155712839 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30619594 + ... + 30623223.

It is an arithmetic number, because the mean of its divisors is an integer number (8145294794).

Almost surely, 2^111155712855 is an apocalyptic number.

111155712855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

111155712855 is a deficient number, since it is larger than the sum of its proper divisors (84331362201).

111155712855 is a wasteful number, since it uses less digits than its factorization.

111155712855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61242847 (or 61242836 counting only the distinct ones).

The product of its digits is 70000, while the sum is 42.

The spelling of 111155712855 in words is "one hundred eleven billion, one hundred fifty-five million, seven hundred twelve thousand, eight hundred fifty-five".