13295747921 has 2 divisors, whose sum is σ = 13295747922. Its totient is φ = 13295747920.

The previous prime is 13295747903. The next prime is 13295747939. The reversal of 13295747921 is 12974759231.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (13295747903) and next prime (13295747939).

It can be written as a sum of positive squares in only one way, i.e., 11443650625 + 1852097296 = 106975^2 + 43036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13295747921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13295747921.

It is not a weakly prime, because it can be changed into another prime (13295740921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6647873960 + 6647873961.

It is an arithmetic number, because the mean of its divisors is an integer number (6647873961).

Almost surely, 2^13295747921 is an apocalyptic number.

It is an amenable number.

13295747921 is a deficient number, since it is larger than the sum of its proper divisors (1).

13295747921 is an equidigital number, since it uses as much as digits as its factorization.

13295747921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 50.

The spelling of 13295747921 in words is "thirteen billion, two hundred ninety-five million, seven hundred forty-seven thousand, nine hundred twenty-one".