268534851679 has 2 divisors, whose sum is σ = 268534851680. Its totient is φ = 268534851678.

The previous prime is 268534851661. The next prime is 268534851691. The reversal of 268534851679 is 976158435862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268534851679 - 2⁵ = 268534851647 is a prime.

It is a super-2 number, since 2×268534851679² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 268534851679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268534858679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134267425839 + 134267425840.

It is an arithmetic number, because the mean of its divisors is an integer number (134267425840).

Almost surely, 2^268534851679 is an apocalyptic number.

268534851679 is a deficient number, since it is larger than the sum of its proper divisors (1).

268534851679 is an equidigital number, since it uses as much as digits as its factorization.

268534851679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87091200, while the sum is 64.

The spelling of 268534851679 in words is "two hundred sixty-eight billion, five hundred thirty-four million, eight hundred fifty-one thousand, six hundred seventy-nine".