17244972557 has 2 divisors, whose sum is σ = 17244972558. Its totient is φ = 17244972556.

The previous prime is 17244972551. The next prime is 17244972559. The reversal of 17244972557 is 75527944271.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17131144996 + 113827561 = 130886^2 + 10669^2 .

It is a cyclic number.

It is not a de Polignac number, because 17244972557 - 2⁸ = 17244972301 is a prime.

Together with 17244972559, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 17244972499 and 17244972508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17244972551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8622486278 + 8622486279.

It is an arithmetic number, because the mean of its divisors is an integer number (8622486279).

Almost surely, 2^17244972557 is an apocalyptic number.

It is an amenable number.

17244972557 is a deficient number, since it is larger than the sum of its proper divisors (1).

17244972557 is an equidigital number, since it uses as much as digits as its factorization.

17244972557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4939200, while the sum is 53.

The spelling of 17244972557 in words is "seventeen billion, two hundred forty-four million, nine hundred seventy-two thousand, five hundred fifty-seven".