13224091709 has 2 divisors, whose sum is σ = 13224091710. Its totient is φ = 13224091708.

The previous prime is 13224091679. The next prime is 13224091721. The reversal of 13224091709 is 90719042231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11140169209 + 2083922500 = 105547^2 + 45650^2 .

It is a cyclic number.

It is not a de Polignac number, because 13224091709 - 2²⁸ = 12955656253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13224091739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6612045854 + 6612045855.

It is an arithmetic number, because the mean of its divisors is an integer number (6612045855).

Almost surely, 2^13224091709 is an apocalyptic number.

It is an amenable number.

13224091709 is a deficient number, since it is larger than the sum of its proper divisors (1).

13224091709 is an equidigital number, since it uses as much as digits as its factorization.

13224091709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 13224091709 in words is "thirteen billion, two hundred twenty-four million, ninety-one thousand, seven hundred nine".