255678484437890 has 16 divisors (see below), whose sum is σ = 460517615398008. Its totient is φ = 102205539684096.

The previous prime is 255678484437889. The next prime is 255678484437911. The reversal of 255678484437890 is 98734484876552.

255678484437890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 218650371022561 + 37028113415329 = 14786831^2 + 6085073^2 .

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, 8231745077 + ... + 8231776136.

Almost surely, 2^{255678484437890} is an apocalyptic number.

255678484437890 is a deficient number, since it is larger than the sum of its proper divisors (204839130960118).

255678484437890 is a wasteful number, since it uses less digits than its factorization.

255678484437890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16463522773.

The product of its (nonzero) digits is 13005619200, while the sum is 80.

The spelling of 255678484437890 in words is "two hundred fifty-five trillion, six hundred seventy-eight billion, four hundred eighty-four million, four hundred thirty-seven thousand, eight hundred ninety".