256291384222 has 8 divisors (see below), whose sum is σ = 390739323672. Its totient is φ = 126044943000.

The previous prime is 256291384213. The next prime is 256291384367. The reversal of 256291384222 is 222483192652.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050374404 + ... + 1050374647.

It is an arithmetic number, because the mean of its divisors is an integer number (48842415459).

Almost surely, 2^256291384222 is an apocalyptic number.

256291384222 is a deficient number, since it is larger than the sum of its proper divisors (134447939450).

256291384222 is a wasteful number, since it uses less digits than its factorization.

256291384222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100749114.

The product of its digits is 829440, while the sum is 46.

The spelling of 256291384222 in words is "two hundred fifty-six billion, two hundred ninety-one million, three hundred eighty-four thousand, two hundred twenty-two".