256410422193 has 8 divisors (see below), whose sum is σ = 341891962528. Its totient is φ = 170934581664.

The previous prime is 256410422189. The next prime is 256410422249. The reversal of 256410422193 is 391224014652.

256410422193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 256410422193 - 2² = 256410422189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256410422993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1318855 + ... + 1500732.

It is an arithmetic number, because the mean of its divisors is an integer number (42736495316).

Almost surely, 2^256410422193 is an apocalyptic number.

It is an amenable number.

256410422193 is a deficient number, since it is larger than the sum of its proper divisors (85481540335).

256410422193 is a wasteful number, since it uses less digits than its factorization.

256410422193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849903.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 256410422193 in words is "two hundred fifty-six billion, four hundred ten million, four hundred twenty-two thousand, one hundred ninety-three".