256332211042 has 4 divisors (see below), whose sum is σ = 384498316566. Its totient is φ = 128166105520.

The previous prime is 256332211033. The next prime is 256332211081. The reversal of 256332211042 is 240112233652.

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., 148110292201 + 108221918841 = 384851^2 + 328971^2 .

It is a junction number, because it is equal to n+sod(n) for n = 256332210995 and 256332211013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64083052759 + ... + 64083052762.

Almost surely, 2^256332211042 is an apocalyptic number.

256332211042 is a deficient number, since it is larger than the sum of its proper divisors (128166105524).

256332211042 is a wasteful number, since it uses less digits than its factorization.

256332211042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128166105523.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 256332211042 its reverse (240112233652), we get a palindrome (496444444694).

The spelling of 256332211042 in words is "two hundred fifty-six billion, three hundred thirty-two million, two hundred eleven thousand, forty-two".