256028868338 has 4 divisors (see below), whose sum is σ = 384043302510. Its totient is φ = 128014434168.

The previous prime is 256028868301. The next prime is 256028868371. The reversal of 256028868338 is 833868820652.

It is a happy number.

256028868338 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 134532703369 + 121496164969 = 366787^2 + 348563^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64007217083 + ... + 64007217086.

Almost surely, 2^256028868338 is an apocalyptic number.

256028868338 is a deficient number, since it is larger than the sum of its proper divisors (128014434172).

256028868338 is a wasteful number, since it uses less digits than its factorization.

256028868338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128014434171.

The product of its (nonzero) digits is 26542080, while the sum is 59.

The spelling of 256028868338 in words is "two hundred fifty-six billion, twenty-eight million, eight hundred sixty-eight thousand, three hundred thirty-eight".