6441872573 has 12 divisors (see below), whose sum is σ = 6712877340. Its totient is φ = 6174455616.

The previous prime is 6441872561. The next prime is 6441872597. The reversal of 6441872573 is 3752781446.

It can be written as a sum of positive squares in 2 ways, for example, as 3622474969 + 2819397604 = 60187^2 + 53098^2 .

It is not a de Polignac number, because 6441872573 - 2⁴ = 6441872557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6441872513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554561 + ... + 566057.

It is an arithmetic number, because the mean of its divisors is an integer number (559406445).

Almost surely, 2^6441872573 is an apocalyptic number.

It is an amenable number.

6441872573 is a deficient number, since it is larger than the sum of its proper divisors (271004767).

6441872573 is a wasteful number, since it uses less digits than its factorization.

6441872573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11804 (or 11665 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 47.

The square root of 6441872573 is about 80261.2769210657. The cubic root of 6441872573 is about 1860.6758030072.

The spelling of 6441872573 in words is "six billion, four hundred forty-one million, eight hundred seventy-two thousand, five hundred seventy-three".