268533397439 has 2 divisors, whose sum is σ = 268533397440. Its totient is φ = 268533397438.

The previous prime is 268533397421. The next prime is 268533397493. The reversal of 268533397439 is 934793335862.

It is a happy number.

Together with next prime (268533397493) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268533397439 - 2²⁴ = 268516620223 is a prime.

It is a super-2 number, since 2×268533397439² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268533337439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134266698719 + 134266698720.

It is an arithmetic number, because the mean of its divisors is an integer number (134266698720).

Almost surely, 2^268533397439 is an apocalyptic number.

268533397439 is a deficient number, since it is larger than the sum of its proper divisors (1).

268533397439 is an equidigital number, since it uses as much as digits as its factorization.

268533397439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88179840, while the sum is 62.

The spelling of 268533397439 in words is "two hundred sixty-eight billion, five hundred thirty-three million, three hundred ninety-seven thousand, four hundred thirty-nine".