6441221467 has 2 divisors, whose sum is σ = 6441221468. Its totient is φ = 6441221466.

The previous prime is 6441221441. The next prime is 6441221473. The reversal of 6441221467 is 7641221446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6441221467 - 2¹¹ = 6441219419 is a prime.

It is not a weakly prime, because it can be changed into another prime (6441221767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220610733 + 3220610734.

It is an arithmetic number, because the mean of its divisors is an integer number (3220610734).

Almost surely, 2^6441221467 is an apocalyptic number.

6441221467 is a deficient number, since it is larger than the sum of its proper divisors (1).

6441221467 is an equidigital number, since it uses as much as digits as its factorization.

6441221467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 37.

The square root of 6441221467 is about 80257.2206533468. The cubic root of 6441221467 is about 1860.6131122298.

The spelling of 6441221467 in words is "six billion, four hundred forty-one million, two hundred twenty-one thousand, four hundred sixty-seven".