12613722442 has 8 divisors (see below), whose sum is σ = 18932436036. Its totient is φ = 6302910432.

The previous prime is 12613722391. The next prime is 12613722461. The reversal of 12613722442 is 24422731621.

It can be written as a sum of positive squares in 2 ways, for example, as 12034309401 + 579413041 = 109701^2 + 24071^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12613722398 and 12613722407.

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, 1971403 + ... + 1977790.

Almost surely, 2^12613722442 is an apocalyptic number.

12613722442 is a deficient number, since it is larger than the sum of its proper divisors (6318713594).

12613722442 is a wasteful number, since it uses less digits than its factorization.

12613722442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3950792.

The product of its digits is 32256, while the sum is 34.

The spelling of 12613722442 in words is "twelve billion, six hundred thirteen million, seven hundred twenty-two thousand, four hundred forty-two".