256622372345242 has 16 divisors (see below), whose sum is σ = 386655535110600. Its totient is φ = 127737312943680.

The previous prime is 256622372345237. The next prime is 256622372345291. The reversal of 256622372345242 is 242543273226652.

256622372345242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 255376092601081 + 1246279744161 = 15980491^2 + 1116369^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25422517 + ... + 34052152.

Almost surely, 2^{256622372345242} is an apocalyptic number.

256622372345242 is a deficient number, since it is larger than the sum of its proper divisors (130033162765358).

256622372345242 is a wasteful number, since it uses less digits than its factorization.

256622372345242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59484321.

The product of its digits is 58060800, while the sum is 55.

The spelling of 256622372345242 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred seventy-two million, three hundred forty-five thousand, two hundred forty-two".