111145719798 has 12 divisors (see below), whose sum is σ = 240815726268. Its totient is φ = 37048573260.

The previous prime is 111145719793. The next prime is 111145719799. The reversal of 111145719798 is 897917541111.

111145719798 is a `hidden beast` number, since 1 + 1 + 11 + 457 + 1 + 97 + 98 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111145719793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3087381088 + ... + 3087381123.

It is an arithmetic number, because the mean of its divisors is an integer number (20067977189).

Almost surely, 2^111145719798 is an apocalyptic number.

111145719798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

111145719798 is an abundant number, since it is smaller than the sum of its proper divisors (129670006470).

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

111145719798 is a wasteful number, since it uses less digits than its factorization.

111145719798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174762219 (or 6174762216 counting only the distinct ones).

The product of its digits is 635040, while the sum is 54.

The spelling of 111145719798 in words is "one hundred eleven billion, one hundred forty-five million, seven hundred nineteen thousand, seven hundred ninety-eight".