13653109321 has 2 divisors, whose sum is σ = 13653109322. Its totient is φ = 13653109320.

The previous prime is 13653109279. The next prime is 13653109331. The reversal of 13653109321 is 12390135631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8174148921 + 5478960400 = 90411^2 + 74020^2 .

It is an emirp because it is prime and its reverse (12390135631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13653109321 - 2³¹ = 11505625673 is a prime.

It is not a weakly prime, because it can be changed into another prime (13653109331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6826554660 + 6826554661.

It is an arithmetic number, because the mean of its divisors is an integer number (6826554661).

Almost surely, 2^13653109321 is an apocalyptic number.

It is an amenable number.

13653109321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13653109321 is an equidigital number, since it uses as much as digits as its factorization.

13653109321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 34.

The spelling of 13653109321 in words is "thirteen billion, six hundred fifty-three million, one hundred nine thousand, three hundred twenty-one".