13245630639 has 4 divisors (see below), whose sum is σ = 17660840856. Its totient is φ = 8830420424.

The previous prime is 13245630599. The next prime is 13245630667. The reversal of 13245630639 is 93603654231.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13245630639 - 2⁸ = 13245630383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13245630639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13245630239) 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, 2207605104 + ... + 2207605109.

It is an arithmetic number, because the mean of its divisors is an integer number (4415210214).

Almost surely, 2^13245630639 is an apocalyptic number.

13245630639 is a deficient number, since it is larger than the sum of its proper divisors (4415210217).

13245630639 is an equidigital number, since it uses as much as digits as its factorization.

13245630639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4415210216.

The product of its (nonzero) digits is 349920, while the sum is 42.

The spelling of 13245630639 in words is "thirteen billion, two hundred forty-five million, six hundred thirty thousand, six hundred thirty-nine".