6544334457 has 24 divisors (see below), whose sum is σ = 9627259200. Its totient is φ = 4282646688.

The previous prime is 6544334437. The next prime is 6544334507. The reversal of 6544334457 is 7544334456.

It is not a de Polignac number, because 6544334457 - 2⁸ = 6544334201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6544334437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 367788 + ... + 385170.

It is an arithmetic number, because the mean of its divisors is an integer number (401135800).

Almost surely, 2^6544334457 is an apocalyptic number.

It is an amenable number.

6544334457 is a deficient number, since it is larger than the sum of its proper divisors (3082924743).

6544334457 is a wasteful number, since it uses less digits than its factorization.

6544334457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18157 (or 18154 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 45.

The square root of 6544334457 is about 80897.0608675000. The cubic root of 6544334457 is about 1870.4890155403.

Subtracting 6544334457 from its reverse (7544334456), we obtain a palindrome (999999999).

The spelling of 6544334457 in words is "six billion, five hundred forty-four million, three hundred thirty-four thousand, four hundred fifty-seven".