111355689998 has 12 divisors (see below), whose sum is σ = 194304316392. Its totient is φ = 47723867100.

The previous prime is 111355689989. The next prime is 111355690001. The reversal of 111355689998 is 899986553111.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 568141178 + ... + 568141373.

It is an arithmetic number, because the mean of its divisors is an integer number (16192026366).

Almost surely, 2^111355689998 is an apocalyptic number.

111355689998 is a deficient number, since it is larger than the sum of its proper divisors (82948626394).

111355689998 is a wasteful number, since it uses less digits than its factorization.

111355689998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136282567 (or 1136282560 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 65.

The spelling of 111355689998 in words is "one hundred eleven billion, three hundred fifty-five million, six hundred eighty-nine thousand, nine hundred ninety-eight".