256684614770 has 8 divisors (see below), whose sum is σ = 462032306604. Its totient is φ = 102673845904.

The previous prime is 256684614763. The next prime is 256684614803. The reversal of 256684614770 is 77416486652.

256684614770 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 252438919489 + 4245695281 = 502433^2 + 65159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 12834230729 + ... + 12834230748.

Almost surely, 2^256684614770 is an apocalyptic number.

256684614770 is a deficient number, since it is larger than the sum of its proper divisors (205347691834).

256684614770 is a wasteful number, since it uses less digits than its factorization.

256684614770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25668461484.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 256684614770 in words is "two hundred fifty-six billion, six hundred eighty-four million, six hundred fourteen thousand, seven hundred seventy".