6443220223446 has 8 divisors (see below), whose sum is σ = 12886440446904. Its totient is φ = 2147740074480.

The previous prime is 6443220223409. The next prime is 6443220223459.

6443220223446 is nontrivially palindromic in base 10.

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

6443220223446 is an admirable number.

It is a super-2 number, since 2×6443220223446² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6443220223398 and 6443220223407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536935018615 + ... + 536935018626.

It is an arithmetic number, because the mean of its divisors is an integer number (1610805055863).

Almost surely, 2^{6443220223446} is an apocalyptic number.

6443220223446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6443220223446 is a wasteful number, since it uses less digits than its factorization.

6443220223446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073870037246.

The product of its (nonzero) digits is 1327104, while the sum is 42.

It can be divided in two parts, 6443220 and 223446, that added together give a palindrome (6666666).

The spelling of 6443220223446 in words is "six trillion, four hundred forty-three billion, two hundred twenty million, two hundred twenty-three thousand, four hundred forty-six".