256404320062 has 32 divisors (see below), whose sum is σ = 434230917120. Its totient is φ = 112478698080.

The previous prime is 256404319987. The next prime is 256404320063. The reversal of 256404320062 is 260023404652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256404320063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1371243 + ... + 1546969.

It is an arithmetic number, because the mean of its divisors is an integer number (13569716160).

Almost surely, 2^256404320062 is an apocalyptic number.

256404320062 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

256404320062 is a deficient number, since it is larger than the sum of its proper divisors (177826597058).

256404320062 is a wasteful number, since it uses less digits than its factorization.

256404320062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178056.

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 256404320062 in words is "two hundred fifty-six billion, four hundred four million, three hundred twenty thousand, sixty-two".