1268763345599 has 4 divisors (see below), whose sum is σ = 1268838744960. Its totient is φ = 1268687946240.

The previous prime is 1268763345593. The next prime is 1268763345613. The reversal of 1268763345599 is 9955433678621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1268763345599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268763345593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37674434 + ... + 37708095.

It is an arithmetic number, because the mean of its divisors is an integer number (317209686240).

Almost surely, 2^{1268763345599} is an apocalyptic number.

1268763345599 is a deficient number, since it is larger than the sum of its proper divisors (75399361).

1268763345599 is an equidigital number, since it uses as much as digits as its factorization.

1268763345599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75399360.

The product of its digits is 293932800, while the sum is 68.

The spelling of 1268763345599 in words is "one trillion, two hundred sixty-eight billion, seven hundred sixty-three million, three hundred forty-five thousand, five hundred ninety-nine".