255656520677 has 8 divisors (see below), whose sum is σ = 266777528640. Its totient is φ = 244535971680.

The previous prime is 255656520667. The next prime is 255656520751. The reversal of 255656520677 is 776025656552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255656520677 - 2²⁰ = 255655472101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255656520667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1518074 + ... + 1678052.

It is an arithmetic number, because the mean of its divisors is an integer number (33347191080).

Almost surely, 2^255656520677 is an apocalyptic number.

It is an amenable number.

255656520677 is a deficient number, since it is larger than the sum of its proper divisors (11121007963).

255656520677 is a wasteful number, since it uses less digits than its factorization.

255656520677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229483.

The product of its (nonzero) digits is 26460000, while the sum is 56.

The spelling of 255656520677 in words is "two hundred fifty-five billion, six hundred fifty-six million, five hundred twenty thousand, six hundred seventy-seven".