13129597706 has 4 divisors (see below), whose sum is σ = 19694396562. Its totient is φ = 6564798852.

The previous prime is 13129597697. The next prime is 13129597751. The reversal of 13129597706 is 60779592131.

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., 9838854481 + 3290743225 = 99191^2 + 57365^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282399425 + ... + 3282399428.

Almost surely, 2^13129597706 is an apocalyptic number.

13129597706 is a deficient number, since it is larger than the sum of its proper divisors (6564798856).

13129597706 is an equidigital number, since it uses as much as digits as its factorization.

13129597706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6564798855.

The product of its (nonzero) digits is 714420, while the sum is 50.

The spelling of 13129597706 in words is "thirteen billion, one hundred twenty-nine million, five hundred ninety-seven thousand, seven hundred six".