256368127818 has 48 divisors (see below), whose sum is σ = 569918704320. Its totient is φ = 76814400960.

The previous prime is 256368127793. The next prime is 256368127867. The reversal of 256368127818 is 818721863652.

256368127818 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256368127818² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1919230 + ... + 2048457.

It is an arithmetic number, because the mean of its divisors is an integer number (11873306340).

Almost surely, 2^256368127818 is an apocalyptic number.

256368127818 is an abundant number, since it is smaller than the sum of its proper divisors (313550576502).

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

256368127818 is a wasteful number, since it uses less digits than its factorization.

256368127818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967803 (or 3967792 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 57.

The spelling of 256368127818 in words is "two hundred fifty-six billion, three hundred sixty-eight million, one hundred twenty-seven thousand, eight hundred eighteen".