256896362738 has 4 divisors (see below), whose sum is σ = 385344544110. Its totient is φ = 128448181368.

The previous prime is 256896362719. The next prime is 256896362753. The reversal of 256896362738 is 837263698652.

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., 153384239449 + 103512123289 = 391643^2 + 321733^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64224090683 + ... + 64224090686.

Almost surely, 2^256896362738 is an apocalyptic number.

256896362738 is a deficient number, since it is larger than the sum of its proper divisors (128448181372).

256896362738 is a wasteful number, since it uses less digits than its factorization.

256896362738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128448181371.

The product of its digits is 156764160, while the sum is 65.

The spelling of 256896362738 in words is "two hundred fifty-six billion, eight hundred ninety-six million, three hundred sixty-two thousand, seven hundred thirty-eight".