268254592517 has 2 divisors, whose sum is σ = 268254592518. Its totient is φ = 268254592516.

The previous prime is 268254592433. The next prime is 268254592537. The reversal of 268254592517 is 715295452862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258769585636 + 9485006881 = 508694^2 + 97391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268254592517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268254592537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134127296258 + 134127296259.

It is an arithmetic number, because the mean of its divisors is an integer number (134127296259).

Almost surely, 2^268254592517 is an apocalyptic number.

It is an amenable number.

268254592517 is a deficient number, since it is larger than the sum of its proper divisors (1).

268254592517 is an equidigital number, since it uses as much as digits as its factorization.

268254592517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096000, while the sum is 56.

The spelling of 268254592517 in words is "two hundred sixty-eight billion, two hundred fifty-four million, five hundred ninety-two thousand, five hundred seventeen".