255645566365 has 32 divisors (see below), whose sum is σ = 352255841280. Its totient is φ = 174472268544.

The previous prime is 255645566357. The next prime is 255645566369. The reversal of 255645566365 is 563665546552.

It is not a de Polignac number, because 255645566365 - 2³ = 255645566357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255645566369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41410419 + ... + 41416591.

It is an arithmetic number, because the mean of its divisors is an integer number (11007995040).

Almost surely, 2^255645566365 is an apocalyptic number.

It is an amenable number.

255645566365 is a deficient number, since it is larger than the sum of its proper divisors (96610274915).

255645566365 is a wasteful number, since it uses less digits than its factorization.

255645566365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11581.

The product of its digits is 97200000, while the sum is 58.

The spelling of 255645566365 in words is "two hundred fifty-five billion, six hundred forty-five million, five hundred sixty-six thousand, three hundred sixty-five".