2550905280855 has 64 divisors (see below), whose sum is σ = 4802294217600. Its totient is φ = 1280297041920.

The previous prime is 2550905280851. The next prime is 2550905280871. The reversal of 2550905280855 is 5580825090552.

2550905280855 is a `hidden beast` number, since 2 + 5 + 509 + 0 + 5 + 2 + 80 + 8 + 55 = 666.

It is not a de Polignac number, because 2550905280855 - 2² = 2550905280851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550905280851) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19877295 + ... + 20005215.

It is an arithmetic number, because the mean of its divisors is an integer number (75035847150).

Almost surely, 2^{2550905280855} is an apocalyptic number.

2550905280855 is a deficient number, since it is larger than the sum of its proper divisors (2251388936745).

2550905280855 is a wasteful number, since it uses less digits than its factorization.

2550905280855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136641 (or 136635 counting only the distinct ones).

The product of its (nonzero) digits is 7200000, while the sum is 54.

The spelling of 2550905280855 in words is "two trillion, five hundred fifty billion, nine hundred five million, two hundred eighty thousand, eight hundred fifty-five".