6643456312222 has 8 divisors (see below), whose sum is σ = 9965341994256. Its totient is φ = 3321675647472.

The previous prime is 6643456312219. The next prime is 6643456312247. The reversal of 6643456312222 is 2222136543466.

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

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, 26095978 + ... + 26349325.

It is an arithmetic number, because the mean of its divisors is an integer number (1245667749282).

Almost surely, 2^{6643456312222} is an apocalyptic number.

6643456312222 is a deficient number, since it is larger than the sum of its proper divisors (3321885682034).

6643456312222 is a wasteful number, since it uses less digits than its factorization.

6643456312222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52508642.

The product of its digits is 2488320, while the sum is 46.

The spelling of 6643456312222 in words is "six trillion, six hundred forty-three billion, four hundred fifty-six million, three hundred twelve thousand, two hundred twenty-two".