268012509769 has 2 divisors, whose sum is σ = 268012509770. Its totient is φ = 268012509768.

The previous prime is 268012509689. The next prime is 268012509781. The reversal of 268012509769 is 967905210862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261031071744 + 6981438025 = 510912^2 + 83555^2 .

It is a cyclic number.

It is not a de Polignac number, because 268012509769 - 2⁷ = 268012509641 is a prime.

It is a super-2 number, since 2×268012509769² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (268012519769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134006254884 + 134006254885.

It is an arithmetic number, because the mean of its divisors is an integer number (134006254885).

Almost surely, 2^268012509769 is an apocalyptic number.

It is an amenable number.

268012509769 is a deficient number, since it is larger than the sum of its proper divisors (1).

268012509769 is an equidigital number, since it uses as much as digits as its factorization.

268012509769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 268012509769 in words is "two hundred sixty-eight billion, twelve million, five hundred nine thousand, seven hundred sixty-nine".