255999999898 has 8 divisors (see below), whose sum is σ = 384139492308. Its totient is φ = 127953502464.

The previous prime is 255999999889. The next prime is 255999999919. The reversal of 255999999898 is 898999999552.

255999999898 is digitally balanced in base 3, 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 2 ways, for example, as 178745465089 + 77254534809 = 422783^2 + 277947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23241861 + ... + 23252872.

Almost surely, 2^255999999898 is an apocalyptic number.

255999999898 is a deficient number, since it is larger than the sum of its proper divisors (128139492410).

255999999898 is a wasteful number, since it uses less digits than its factorization.

255999999898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46497488.

The product of its digits is 15305500800, while the sum is 91.

The spelling of 255999999898 in words is "two hundred fifty-five billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred ninety-eight".