256340316740 has 24 divisors (see below), whose sum is σ = 541617216000. Its totient is φ = 101907069408.

The previous prime is 256340316731. The next prime is 256340316851. The reversal of 256340316740 is 47613043652.

256340316740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 39312740 + ... + 39319259.

It is an arithmetic number, because the mean of its divisors is an integer number (22567384000).

Almost surely, 2^256340316740 is an apocalyptic number.

256340316740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256340316740 is an abundant number, since it is smaller than the sum of its proper divisors (285276899260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256340316740 is a wasteful number, since it uses less digits than its factorization.

256340316740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78632171 (or 78632169 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 256340316740 in words is "two hundred fifty-six billion, three hundred forty million, three hundred sixteen thousand, seven hundred forty".