256995346472 has 16 divisors (see below), whose sum is σ = 481886410740. Its totient is φ = 128492303616.

The previous prime is 256995346427. The next prime is 256995346519. The reversal of 256995346472 is 274643599652.

256995346472 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 2 ways, for example, as 250894799236 + 6100547236 = 500894^2 + 78106^2 .

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 3 ways as a sum of consecutive naturals, for example, 464033 + ... + 854000.

Almost surely, 2^256995346472 is an apocalyptic number.

It is an amenable number.

256995346472 is a deficient number, since it is larger than the sum of its proper divisors (224891064268).

256995346472 is a wasteful number, since it uses less digits than its factorization.

256995346472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342412 (or 1342408 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 62.

The spelling of 256995346472 in words is "two hundred fifty-six billion, nine hundred ninety-five million, three hundred forty-six thousand, four hundred seventy-two".