256063106217 has 16 divisors (see below), whose sum is σ = 345276829440. Its totient is φ = 168779318400.

The previous prime is 256063106209. The next prime is 256063106227. The reversal of 256063106217 is 712601360652.

It is not a de Polignac number, because 256063106217 - 2³ = 256063106209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256063106227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6203467 + ... + 6244607.

It is an arithmetic number, because the mean of its divisors is an integer number (21579801840).

Almost surely, 2^256063106217 is an apocalyptic number.

It is an amenable number.

256063106217 is a deficient number, since it is larger than the sum of its proper divisors (89213723223).

256063106217 is a wasteful number, since it uses less digits than its factorization.

256063106217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64544.

The product of its (nonzero) digits is 90720, while the sum is 39.

Adding to 256063106217 its reverse (712601360652), we get a palindrome (968664466869).

The spelling of 256063106217 in words is "two hundred fifty-six billion, sixty-three million, one hundred six thousand, two hundred seventeen".