256046746768 has 30 divisors (see below), whose sum is σ = 503176332662. Its totient is φ = 126220187520.

The previous prime is 256046746757. The next prime is 256046746777. The reversal of 256046746768 is 867647640652.

It is a happy number.

256046746768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 189548778384 + 66497968384 = 435372^2 + 257872^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1506621 + ... + 1667932.

Almost surely, 2^256046746768 is an apocalyptic number.

It is an amenable number.

256046746768 is a deficient number, since it is larger than the sum of its proper divisors (247129585894).

256046746768 is an equidigital number, since it uses as much as digits as its factorization.

256046746768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174703 (or 3174626 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 61.

The spelling of 256046746768 in words is "two hundred fifty-six billion, forty-six million, seven hundred forty-six thousand, seven hundred sixty-eight".