13294604639 has 4 divisors (see below), whose sum is σ = 14076640224. Its totient is φ = 12512569056.

The previous prime is 13294604633. The next prime is 13294604651. The reversal of 13294604639 is 93640649231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13294604639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13294604593 and 13294604602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13294604633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391017767 + ... + 391017800.

It is an arithmetic number, because the mean of its divisors is an integer number (3519160056).

Almost surely, 2^13294604639 is an apocalyptic number.

13294604639 is a deficient number, since it is larger than the sum of its proper divisors (782035585).

13294604639 is an equidigital number, since it uses as much as digits as its factorization.

13294604639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782035584.

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 13294604639 in words is "thirteen billion, two hundred ninety-four million, six hundred four thousand, six hundred thirty-nine".