256271214655 has 8 divisors (see below), whose sum is σ = 307532745072. Its totient is φ = 205012113408.

The previous prime is 256271214643. The next prime is 256271214697. The reversal of 256271214655 is 556412172652.

It is a happy number.

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 256271214655 - 2³⁵ = 221911476287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366517 + ... + 804286.

It is an arithmetic number, because the mean of its divisors is an integer number (38441593134).

Almost surely, 2^256271214655 is an apocalyptic number.

256271214655 is a deficient number, since it is larger than the sum of its proper divisors (51261530417).

256271214655 is a wasteful number, since it uses less digits than its factorization.

256271214655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214585.

The product of its digits is 1008000, while the sum is 46.

The spelling of 256271214655 in words is "two hundred fifty-six billion, two hundred seventy-one million, two hundred fourteen thousand, six hundred fifty-five".