13185263842 has 4 divisors (see below), whose sum is σ = 19777895766. Its totient is φ = 6592631920.

The previous prime is 13185263837. The next prime is 13185263879. The reversal of 13185263842 is 24836258131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12570670161 + 614593681 = 112119^2 + 24791^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3296315959 + ... + 3296315962.

Almost surely, 2^13185263842 is an apocalyptic number.

13185263842 is a deficient number, since it is larger than the sum of its proper divisors (6592631924).

13185263842 is an equidigital number, since it uses as much as digits as its factorization.

13185263842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592631923.

The product of its digits is 276480, while the sum is 43.

The spelling of 13185263842 in words is "thirteen billion, one hundred eighty-five million, two hundred sixty-three thousand, eight hundred forty-two".