111400512543 has 16 divisors (see below), whose sum is σ = 165042956640. Its totient is φ = 74264686272.

The previous prime is 111400512541. The next prime is 111400512607. The reversal of 111400512543 is 345215004111.

111400512543 is a `hidden beast` number, since 1 + 1 + 1 + 400 + 5 + 1 + 254 + 3 = 666.

It is not a de Polignac number, because 111400512543 - 2¹ = 111400512541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111400512541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1547355 + ... + 1617747.

It is an arithmetic number, because the mean of its divisors is an integer number (10315184790).

Almost surely, 2^111400512543 is an apocalyptic number.

111400512543 is a deficient number, since it is larger than the sum of its proper divisors (53642444097).

111400512543 is an equidigital number, since it uses as much as digits as its factorization.

111400512543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129015 (or 129009 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 111400512543 its reverse (345215004111), we get a palindrome (456615516654).

The spelling of 111400512543 in words is "one hundred eleven billion, four hundred million, five hundred twelve thousand, five hundred forty-three".