111101999958 has 24 divisors (see below), whose sum is σ = 253390527000. Its totient is φ = 35084841984.

The previous prime is 111101999929. The next prime is 111101999969. The reversal of 111101999958 is 859999101111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162429483 + ... + 162430166.

It is an arithmetic number, because the mean of its divisors is an integer number (10557938625).

Almost surely, 2^111101999958 is an apocalyptic number.

111101999958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

111101999958 is an abundant number, since it is smaller than the sum of its proper divisors (142288527042).

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

111101999958 is a wasteful number, since it uses less digits than its factorization.

111101999958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324859676 (or 324859673 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 54.

The spelling of 111101999958 in words is "one hundred eleven billion, one hundred one million, nine hundred ninety-nine thousand, nine hundred fifty-eight".