17253979563439 has 2 divisors, whose sum is σ = 17253979563440. Its totient is φ = 17253979563438.

The previous prime is 17253979563421. The next prime is 17253979563493. The reversal of 17253979563439 is 93436597935271.

Together with next prime (17253979563493) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17253979563439 - 2⁵ = 17253979563407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17253979563409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8626989781719 + 8626989781720.

It is an arithmetic number, because the mean of its divisors is an integer number (8626989781720).

Almost surely, 2^{17253979563439} is an apocalyptic number.

17253979563439 is a deficient number, since it is larger than the sum of its proper divisors (1).

17253979563439 is an equidigital number, since it uses as much as digits as its factorization.

17253979563439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1157360400, while the sum is 73.

The spelling of 17253979563439 in words is "seventeen trillion, two hundred fifty-three billion, nine hundred seventy-nine million, five hundred sixty-three thousand, four hundred thirty-nine".