255889555443 has 12 divisors (see below), whose sum is σ = 370647828720. Its totient is φ = 170117845296.

The previous prime is 255889555423. The next prime is 255889555451. The reversal of 255889555443 is 344555988552.

It is a happy number.

255889555443 is a `hidden beast` number, since 2 + 5 + 5 + 8 + 89 + 5 + 5 + 544 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-255889555443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255889555423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39595896 + ... + 39602357.

It is an arithmetic number, because the mean of its divisors is an integer number (30887319060).

Almost surely, 2^255889555443 is an apocalyptic number.

255889555443 is a deficient number, since it is larger than the sum of its proper divisors (114758273277).

255889555443 is a wasteful number, since it uses less digits than its factorization.

255889555443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79198618 (or 79198615 counting only the distinct ones).

The product of its digits is 172800000, while the sum is 63.

The spelling of 255889555443 in words is "two hundred fifty-five billion, eight hundred eighty-nine million, five hundred fifty-five thousand, four hundred forty-three".