255999853629 has 24 divisors (see below), whose sum is σ = 407934733752. Its totient is φ = 153695969280.

The previous prime is 255999853607. The next prime is 255999853661. The reversal of 255999853629 is 926358999552.

255999853629 is a `hidden beast` number, since 2 + 5 + 599 + 9 + 8 + 5 + 3 + 6 + 29 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 875864025 + 255123989604 = 29595^2 + 505098^2 .

It is not a de Polignac number, because 255999853629 - 2¹⁵ = 255999820861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255999853129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26678532 + ... + 26688125.

It is an arithmetic number, because the mean of its divisors is an integer number (16997280573).

Almost surely, 2^255999853629 is an apocalyptic number.

It is an amenable number.

255999853629 is a deficient number, since it is larger than the sum of its proper divisors (151934880123).

255999853629 is a wasteful number, since it uses less digits than its factorization.

255999853629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53366717 (or 53366714 counting only the distinct ones).

The product of its digits is 472392000, while the sum is 72.

The spelling of 255999853629 in words is "two hundred fifty-five billion, nine hundred ninety-nine million, eight hundred fifty-three thousand, six hundred twenty-nine".