111813430642 has 8 divisors (see below), whose sum is σ = 177586036956. Its totient is φ = 52618084992.

The previous prime is 111813430601. The next prime is 111813430669. The reversal of 111813430642 is 246034318111.

It can be written as a sum of positive squares in 2 ways, for example, as 111281620921 + 531809721 = 333589^2 + 23061^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 3288630313 = 111813430642 / (1 + 1 + 1 + 8 + 1 + 3 + 4 + 3 + 0 + 6 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 111813430598 and 111813430607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644315123 + ... + 1644315190.

Almost surely, 2^111813430642 is an apocalyptic number.

111813430642 is a deficient number, since it is larger than the sum of its proper divisors (65772606314).

111813430642 is a wasteful number, since it uses less digits than its factorization.

111813430642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288630332.

The product of its (nonzero) digits is 13824, while the sum is 34.

Adding to 111813430642 its reverse (246034318111), we get a palindrome (357847748753).

The spelling of 111813430642 in words is "one hundred eleven billion, eight hundred thirteen million, four hundred thirty thousand, six hundred forty-two".