256622330400312 has 16 divisors (see below), whose sum is σ = 641555826000840. Its totient is φ = 85540776800096.

The previous prime is 256622330400311. The next prime is 256622330400329. The reversal of 256622330400312 is 213004033226652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256622330400311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5346298549983 + ... + 5346298550030.

Almost surely, 2^{256622330400312} is an apocalyptic number.

It is an amenable number.

256622330400312 is an abundant number, since it is smaller than the sum of its proper divisors (384933495600528).

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

256622330400312 is a wasteful number, since it uses less digits than its factorization.

256622330400312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10692597100022 (or 10692597100018 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 256622330400312 its reverse (213004033226652), we get a palindrome (469626363626964).

The spelling of 256622330400312 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred thirty million, four hundred thousand, three hundred twelve".