111389085138 has 8 divisors (see below), whose sum is σ = 222778170288. Its totient is φ = 37129695044.

The previous prime is 111389085133. The next prime is 111389085179. The reversal of 111389085138 is 831580983111.

It is a happy number.

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

111389085138 is an admirable number.

It is a super-2 number, since 2×111389085138² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111389085131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9282423756 + ... + 9282423767.

It is an arithmetic number, because the mean of its divisors is an integer number (27847271286).

Almost surely, 2^111389085138 is an apocalyptic number.

111389085138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111389085138 is a wasteful number, since it uses less digits than its factorization.

111389085138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18564847528.

The product of its (nonzero) digits is 207360, while the sum is 48.

The spelling of 111389085138 in words is "one hundred eleven billion, three hundred eighty-nine million, eighty-five thousand, one hundred thirty-eight".