1268381875237 has 2 divisors, whose sum is σ = 1268381875238. Its totient is φ = 1268381875236.

The previous prime is 1268381875199. The next prime is 1268381875261. The reversal of 1268381875237 is 7325781838621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1258415047681 + 9966827556 = 1121791^2 + 99834^2 .

It is a cyclic number.

It is not a de Polignac number, because 1268381875237 - 2³¹ = 1266234391589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1268381875337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634190937618 + 634190937619.

It is an arithmetic number, because the mean of its divisors is an integer number (634190937619).

Almost surely, 2^{1268381875237} is an apocalyptic number.

It is an amenable number.

1268381875237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268381875237 is an equidigital number, since it uses as much as digits as its factorization.

1268381875237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27095040, while the sum is 61.

The spelling of 1268381875237 in words is "one trillion, two hundred sixty-eight billion, three hundred eighty-one million, eight hundred seventy-five thousand, two hundred thirty-seven".