256068866676 has 72 divisors (see below), whose sum is σ = 692604525760. Its totient is φ = 72131955840.

The previous prime is 256068866671. The next prime is 256068866693. The reversal of 256068866676 is 676668860652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256068866671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121080 + ... + 725808.

Almost surely, 2^256068866676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256068866676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346302262880).

256068866676 is an abundant number, since it is smaller than the sum of its proper divisors (436535659084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256068866676 is a wasteful number, since it uses less digits than its factorization.

256068866676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604885 (or 604812 counting only the distinct ones).

The product of its (nonzero) digits is 209018880, while the sum is 66.

The spelling of 256068866676 in words is "two hundred fifty-six billion, sixty-eight million, eight hundred sixty-six thousand, six hundred seventy-six".