6441221468 has 12 divisors (see below), whose sum is σ = 12296877432. Its totient is φ = 2927827920.

The previous prime is 6441221467. The next prime is 6441221473. The reversal of 6441221468 is 8641221446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6441221467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73195655 + ... + 73195742.

It is an arithmetic number, because the mean of its divisors is an integer number (1024739786).

Almost surely, 2^6441221468 is an apocalyptic number.

It is an amenable number.

6441221468 is a deficient number, since it is larger than the sum of its proper divisors (5855655964).

6441221468 is a wasteful number, since it uses less digits than its factorization.

6441221468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146391412 (or 146391410 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 6441221468 is about 80257.2206595768. The cubic root of 6441221468 is about 1860.6131123261.

The spelling of 6441221468 in words is "six billion, four hundred forty-one million, two hundred twenty-one thousand, four hundred sixty-eight".