268472499517 has 2 divisors, whose sum is σ = 268472499518. Its totient is φ = 268472499516.

The previous prime is 268472499511. The next prime is 268472499539. The reversal of 268472499517 is 715994274862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259115613156 + 9356886361 = 509034^2 + 96731^2 .

It is a cyclic number.

It is not a de Polignac number, because 268472499517 - 2²³ = 268464110909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268472499511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134236249758 + 134236249759.

It is an arithmetic number, because the mean of its divisors is an integer number (134236249759).

Almost surely, 2^268472499517 is an apocalyptic number.

It is an amenable number.

268472499517 is a deficient number, since it is larger than the sum of its proper divisors (1).

268472499517 is an equidigital number, since it uses as much as digits as its factorization.

268472499517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60963840, while the sum is 64.

The spelling of 268472499517 in words is "two hundred sixty-eight billion, four hundred seventy-two million, four hundred ninety-nine thousand, five hundred seventeen".