256998426304 has 14 divisors (see below), whose sum is σ = 509981252324. Its totient is φ = 128499213120.

The previous prime is 256998426301. The next prime is 256998426331. The reversal of 256998426304 is 403624899652.

256998426304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256998426304² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256998426301) by changing a digit.

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 as a sum of consecutive naturals, namely, 2007800142 + ... + 2007800269.

Almost surely, 2^256998426304 is an apocalyptic number.

It is an amenable number.

256998426304 is a deficient number, since it is larger than the sum of its proper divisors (252982826020).

256998426304 is an equidigital number, since it uses as much as digits as its factorization.

256998426304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015600423 (or 4015600413 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 256998426304 in words is "two hundred fifty-six billion, nine hundred ninety-eight million, four hundred twenty-six thousand, three hundred four".