256166324346 has 16 divisors (see below), whose sum is σ = 515475795744. Its totient is φ = 84864916944.

The previous prime is 256166324333. The next prime is 256166324347. The reversal of 256166324346 is 643423661652.

It is a junction number, because it is equal to n+sod(n) for n = 256166324295 and 256166324304.

It is not an unprimeable number, because it can be changed into a prime (256166324347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130963401 + ... + 130965356.

It is an arithmetic number, because the mean of its divisors is an integer number (32217237234).

Almost surely, 2^256166324346 is an apocalyptic number.

256166324346 is an abundant number, since it is smaller than the sum of its proper divisors (259309471398).

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

256166324346 is a wasteful number, since it uses less digits than its factorization.

256166324346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261928925.

The product of its digits is 3732480, while the sum is 48.

Adding to 256166324346 its reverse (643423661652), we get a palindrome (899589985998).

The spelling of 256166324346 in words is "two hundred fifty-six billion, one hundred sixty-six million, three hundred twenty-four thousand, three hundred forty-six".