1268746026733 has 2 divisors, whose sum is σ = 1268746026734. Its totient is φ = 1268746026732.

The previous prime is 1268746026731. The next prime is 1268746026761. The reversal of 1268746026733 is 3376206478621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 950472906084 + 318273120649 = 974922^2 + 564157^2 .

It is a cyclic number.

It is not a de Polignac number, because 1268746026733 - 2¹ = 1268746026731 is a prime.

Together with 1268746026731, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1268746026731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634373013366 + 634373013367.

It is an arithmetic number, because the mean of its divisors is an integer number (634373013367).

Almost surely, 2^{1268746026733} is an apocalyptic number.

It is an amenable number.

1268746026733 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268746026733 is an equidigital number, since it uses as much as digits as its factorization.

1268746026733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 1268746026733 in words is "one trillion, two hundred sixty-eight billion, seven hundred forty-six million, twenty-six thousand, seven hundred thirty-three".