1255122643568 has 40 divisors (see below), whose sum is σ = 2433927366000. Its totient is φ = 627012598784.

The previous prime is 1255122643543. The next prime is 1255122643571. The reversal of 1255122643568 is 8653462215521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178814363 + ... + 178821381.

It is an arithmetic number, because the mean of its divisors is an integer number (60848184150).

Almost surely, 2^{1255122643568} is an apocalyptic number.

It is an amenable number.

1255122643568 is a deficient number, since it is larger than the sum of its proper divisors (1178804722432).

1255122643568 is a wasteful number, since it uses less digits than its factorization.

1255122643568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15209 (or 15203 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 50.

The spelling of 1255122643568 in words is "one trillion, two hundred fifty-five billion, one hundred twenty-two million, six hundred forty-three thousand, five hundred sixty-eight".