268965921529 has 2 divisors, whose sum is σ = 268965921530. Its totient is φ = 268965921528.

The previous prime is 268965921517. The next prime is 268965921541. The reversal of 268965921529 is 925129569862.

It is a balanced prime because it is at equal distance from previous prime (268965921517) and next prime (268965921541).

It can be written as a sum of positive squares in only one way, i.e., 266705109225 + 2260812304 = 516435^2 + 47548^2 .

It is a cyclic number.

It is not a de Polignac number, because 268965921529 - 2²¹ = 268963824377 is a prime.

It is not a weakly prime, because it can be changed into another prime (268965921509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134482960764 + 134482960765.

It is an arithmetic number, because the mean of its divisors is an integer number (134482960765).

Almost surely, 2^268965921529 is an apocalyptic number.

It is an amenable number.

268965921529 is a deficient number, since it is larger than the sum of its proper divisors (1).

268965921529 is an equidigital number, since it uses as much as digits as its factorization.

268965921529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41990400, while the sum is 64.

The spelling of 268965921529 in words is "two hundred sixty-eight billion, nine hundred sixty-five million, nine hundred twenty-one thousand, five hundred twenty-nine".