1255560777759 has 16 divisors (see below), whose sum is σ = 1756626220800. Its totient is φ = 796174553856.

The previous prime is 1255560777733. The next prime is 1255560777773. The reversal of 1255560777759 is 9577770655521.

It is not a de Polignac number, because 1255560777759 - 2⁷ = 1255560777631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1255560777759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255560772759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50815954 + ... + 50840655.

It is an arithmetic number, because the mean of its divisors is an integer number (109789138800).

Almost surely, 2^{1255560777759} is an apocalyptic number.

1255560777759 is a deficient number, since it is larger than the sum of its proper divisors (501065443041).

1255560777759 is a wasteful number, since it uses less digits than its factorization.

1255560777759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101656814.

The product of its (nonzero) digits is 162067500, while the sum is 66.

The spelling of 1255560777759 in words is "one trillion, two hundred fifty-five billion, five hundred sixty million, seven hundred seventy-seven thousand, seven hundred fifty-nine".