256231288380834 has 48 divisors (see below), whose sum is σ = 597910235500032. Its totient is φ = 78835487069664.

The previous prime is 256231288380817. The next prime is 256231288380919. The reversal of 256231288380834 is 438083882132652.

256231288380834 is a `hidden beast` number, since 2 + 56 + 2 + 3 + 128 + 8 + 380 + 83 + 4 = 666.

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, 30325972 + ... + 37843455.

It is an arithmetic number, because the mean of its divisors is an integer number (12456463239584).

Almost surely, 2^{256231288380834} is an apocalyptic number.

256231288380834 is an abundant number, since it is smaller than the sum of its proper divisors (341678947119198).

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

256231288380834 is a wasteful number, since it uses less digits than its factorization.

256231288380834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68185511 (or 68185508 counting only the distinct ones).

The product of its (nonzero) digits is 106168320, while the sum is 63.

The spelling of 256231288380834 in words is "two hundred fifty-six trillion, two hundred thirty-one billion, two hundred eighty-eight million, three hundred eighty thousand, eight hundred thirty-four".