13322156509 has 2 divisors, whose sum is σ = 13322156510. Its totient is φ = 13322156508.

The previous prime is 13322156501. The next prime is 13322156543. The reversal of 13322156509 is 90565122331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10758253284 + 2563903225 = 103722^2 + 50635^2 .

It is a cyclic number.

It is not a de Polignac number, because 13322156509 - 2³ = 13322156501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13322156501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6661078254 + 6661078255.

It is an arithmetic number, because the mean of its divisors is an integer number (6661078255).

Almost surely, 2^13322156509 is an apocalyptic number.

It is an amenable number.

13322156509 is a deficient number, since it is larger than the sum of its proper divisors (1).

13322156509 is an equidigital number, since it uses as much as digits as its factorization.

13322156509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 13322156509 in words is "thirteen billion, three hundred twenty-two million, one hundred fifty-six thousand, five hundred nine".