13721397344 has 24 divisors (see below), whose sum is σ = 27058987368. Its totient is φ = 6849273600.

The previous prime is 13721397343. The next prime is 13721397353. The reversal of 13721397344 is 44379312731.

13721397344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13721397295 and 13721397304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13721397343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337502 + ... + 375965.

It is an arithmetic number, because the mean of its divisors is an integer number (1127457807).

Almost surely, 2^13721397344 is an apocalyptic number.

It is an amenable number.

13721397344 is a deficient number, since it is larger than the sum of its proper divisors (13337590024).

13721397344 is an equidigital number, since it uses as much as digits as its factorization.

13721397344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714078 (or 714070 counting only the distinct ones).

The product of its digits is 381024, while the sum is 44.

The spelling of 13721397344 in words is "thirteen billion, seven hundred twenty-one million, three hundred ninety-seven thousand, three hundred forty-four".