256475427446 has 32 divisors (see below), whose sum is σ = 441709908480. Its totient is φ = 109408827456.

The previous prime is 256475427427. The next prime is 256475427451. The reversal of 256475427446 is 644724574652.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 256475427391 and 256475427400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22745666 + ... + 22756938.

It is an arithmetic number, because the mean of its divisors is an integer number (13803434640).

Almost surely, 2^256475427446 is an apocalyptic number.

256475427446 is a deficient number, since it is larger than the sum of its proper divisors (185234481034).

256475427446 is a wasteful number, since it uses less digits than its factorization.

256475427446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18668.

The product of its digits is 45158400, while the sum is 56.

The spelling of 256475427446 in words is "two hundred fifty-six billion, four hundred seventy-five million, four hundred twenty-seven thousand, four hundred forty-six".