255999143943 has 12 divisors (see below), whose sum is σ = 370078909200. Its totient is φ = 170526541536.

The previous prime is 255999143929. The next prime is 255999143969. The reversal of 255999143943 is 349341999552.

255999143943 is a `hidden beast` number, since 2 + 5 + 599 + 9 + 1 + 4 + 39 + 4 + 3 = 666.

It is not a de Polignac number, because 255999143943 - 2⁴ = 255999143927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255999143143) 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, 11617918 + ... + 11639931.

It is an arithmetic number, because the mean of its divisors is an integer number (30839909100).

Almost surely, 2^255999143943 is an apocalyptic number.

255999143943 is a deficient number, since it is larger than the sum of its proper divisors (114079765257).

255999143943 is a wasteful number, since it uses less digits than its factorization.

255999143943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23259078 (or 23259075 counting only the distinct ones).

The product of its digits is 47239200, while the sum is 63.

The spelling of 255999143943 in words is "two hundred fifty-five billion, nine hundred ninety-nine million, one hundred forty-three thousand, nine hundred forty-three".