256066225666230 has 128 divisors (see below), whose sum is σ = 721438514334720. Its totient is φ = 56939421242880.

The previous prime is 256066225666219. The next prime is 256066225666259. The reversal of 256066225666230 is 32666522660652.

It is a happy 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 63 ways as a sum of consecutive naturals, for example, 52190020 + ... + 56885240.

It is an arithmetic number, because the mean of its divisors is an integer number (5636238393240).

Almost surely, 2^{256066225666230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256066225666230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360719257167360).

256066225666230 is an abundant number, since it is smaller than the sum of its proper divisors (465372288668490).

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

256066225666230 is a wasteful number, since it uses less digits than its factorization.

256066225666230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4702294.

The product of its (nonzero) digits is 55987200, while the sum is 57.

The spelling of 256066225666230 in words is "two hundred fifty-six trillion, sixty-six billion, two hundred twenty-five million, six hundred sixty-six thousand, two hundred thirty".