111117579543 has 8 divisors (see below), whose sum is σ = 164618636400. Its totient is φ = 74078386344.

The previous prime is 111117579541. The next prime is 111117579557. The reversal of 111117579543 is 345975711111.

111117579543 is a `hidden beast` number, since 1 + 1 + 11 + 17 + 579 + 54 + 3 = 666.

It is not a de Polignac number, because 111117579543 - 2¹ = 111117579541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111117579541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2057732928 + ... + 2057732981.

It is an arithmetic number, because the mean of its divisors is an integer number (20577329550).

Almost surely, 2^111117579543 is an apocalyptic number.

111117579543 is a deficient number, since it is larger than the sum of its proper divisors (53501056857).

111117579543 is an equidigital number, since it uses as much as digits as its factorization.

111117579543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115465918 (or 4115465912 counting only the distinct ones).

The product of its digits is 132300, while the sum is 45.

The spelling of 111117579543 in words is "one hundred eleven billion, one hundred seventeen million, five hundred seventy-nine thousand, five hundred forty-three".