13220402512489 has 2 divisors, whose sum is σ = 13220402512490. Its totient is φ = 13220402512488.

The previous prime is 13220402512399. The next prime is 13220402512531. The reversal of 13220402512489 is 98421520402231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11529861669225 + 1690540843264 = 3395565^2 + 1300208^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220402512489 - 2²⁵ = 13220368958057 is a prime.

It is not a weakly prime, because it can be changed into another prime (13220402512189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610201256244 + 6610201256245.

It is an arithmetic number, because the mean of its divisors is an integer number (6610201256245).

Almost surely, 2^{13220402512489} is an apocalyptic number.

It is an amenable number.

13220402512489 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220402512489 is an equidigital number, since it uses as much as digits as its factorization.

13220402512489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 13220402512489 in words is "thirteen trillion, two hundred twenty billion, four hundred two million, five hundred twelve thousand, four hundred eighty-nine".