1256068063809 has 96 divisors (see below), whose sum is σ = 2065661072384. Its totient is φ = 730162667520.

The previous prime is 1256068063801. The next prime is 1256068063837. The reversal of 1256068063809 is 9083608606521.

It is a happy number.

1256068063809 is a `hidden beast` number, since 1 + 25 + 606 + 8 + 0 + 6 + 3 + 8 + 0 + 9 = 666.

It is not a de Polignac number, because 1256068063809 - 2³ = 1256068063801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1256068063801) 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 95 ways as a sum of consecutive naturals, for example, 25658334 + ... + 25707240.

Almost surely, 2^{1256068063809} is an apocalyptic number.

It is an amenable number.

1256068063809 is a deficient number, since it is larger than the sum of its proper divisors (809593008575).

1256068063809 is a wasteful number, since it uses less digits than its factorization.

1256068063809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49127 (or 49124 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 1256068063809 in words is "one trillion, two hundred fifty-six billion, sixty-eight million, sixty-three thousand, eight hundred nine".