13221703340639 has 8 divisors (see below), whose sum is σ = 13239324298032. Its totient is φ = 13204083032640.

The previous prime is 13221703340633. The next prime is 13221703340641. The reversal of 13221703340639 is 93604330712231.

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

It is a cyclic number.

It is not a de Polignac number, because 13221703340639 - 2²⁰ = 13221702292063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13221703340639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221703340633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51500477 + ... + 51756569.

It is an arithmetic number, because the mean of its divisors is an integer number (1654915537254).

Almost surely, 2^{13221703340639} is an apocalyptic number.

13221703340639 is a deficient number, since it is larger than the sum of its proper divisors (17620957393).

13221703340639 is an equidigital number, since it uses as much as digits as its factorization.

13221703340639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324697.

The product of its (nonzero) digits is 489888, while the sum is 44.

The spelling of 13221703340639 in words is "thirteen trillion, two hundred twenty-one billion, seven hundred three million, three hundred forty thousand, six hundred thirty-nine".