275780255805 has 24 divisors (see below), whose sum is σ = 484751779200. Its totient is φ = 145011212640.

The previous prime is 275780255771. The next prime is 275780255819. The reversal of 275780255805 is 508552087572.

275780255805 is a `hidden beast` number, since 2 + 7 + 5 + 7 + 80 + 2 + 558 + 0 + 5 = 666.

It is not a de Polignac number, because 275780255805 - 2⁹ = 275780255293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43154905 + ... + 43161294.

It is an arithmetic number, because the mean of its divisors is an integer number (20197990800).

Almost surely, 2^275780255805 is an apocalyptic number.

It is an amenable number.

275780255805 is a deficient number, since it is larger than the sum of its proper divisors (208971523395).

275780255805 is a wasteful number, since it uses less digits than its factorization.

275780255805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86316281 (or 86316278 counting only the distinct ones).

The product of its (nonzero) digits is 7840000, while the sum is 54.

The spelling of 275780255805 in words is "two hundred seventy-five billion, seven hundred eighty million, two hundred fifty-five thousand, eight hundred five".