256796989448 has 64 divisors (see below), whose sum is σ = 500735520000. Its totient is φ = 123394365952.

The previous prime is 256796989433. The next prime is 256796989469. The reversal of 256796989448 is 844989697652.

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, 4005953 + ... + 4069551.

It is an arithmetic number, because the mean of its divisors is an integer number (7823992500).

Almost surely, 2^256796989448 is an apocalyptic number.

It is an amenable number.

256796989448 is a deficient number, since it is larger than the sum of its proper divisors (243938530552).

256796989448 is a wasteful number, since it uses less digits than its factorization.

256796989448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63854 (or 63850 counting only the distinct ones).

The product of its digits is 1881169920, while the sum is 77.

The spelling of 256796989448 in words is "two hundred fifty-six billion, seven hundred ninety-six million, nine hundred eighty-nine thousand, four hundred forty-eight".