255530560665 has 16 divisors (see below), whose sum is σ = 410924276928. Its totient is φ = 135591172416.

The previous prime is 255530560657. The next prime is 255530560687. The reversal of 255530560665 is 566065035552.

It is not a de Polignac number, because 255530560665 - 2³ = 255530560657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43234027 + ... + 43239936.

It is an arithmetic number, because the mean of its divisors is an integer number (25682767308).

Almost surely, 2^255530560665 is an apocalyptic number.

It is an amenable number.

255530560665 is a deficient number, since it is larger than the sum of its proper divisors (155393716263).

255530560665 is a wasteful number, since it uses less digits than its factorization.

255530560665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86474168.

The product of its (nonzero) digits is 4050000, while the sum is 48.

The spelling of 255530560665 in words is "two hundred fifty-five billion, five hundred thirty million, five hundred sixty thousand, six hundred sixty-five".