6441221445 has 16 divisors (see below), whose sum is σ = 10848373440. Its totient is φ = 3254511744.

The previous prime is 6441221441. The next prime is 6441221467. The reversal of 6441221445 is 5441221446.

It is not a de Polignac number, because 6441221445 - 2² = 6441221441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6441221441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11300104 + ... + 11300673.

It is an arithmetic number, because the mean of its divisors is an integer number (678023340).

Almost surely, 2^6441221445 is an apocalyptic number.

It is an amenable number.

6441221445 is a deficient number, since it is larger than the sum of its proper divisors (4407151995).

6441221445 is a wasteful number, since it uses less digits than its factorization.

6441221445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22600804.

The product of its digits is 30720, while the sum is 33.

The square root of 6441221445 is about 80257.2205162875. The cubic root of 6441221445 is about 1860.6131101115.

Subtracting from 6441221445 its reverse (5441221446), we obtain a palindrome (999999999).

The spelling of 6441221445 in words is "six billion, four hundred forty-one million, two hundred twenty-one thousand, four hundred forty-five".