6544064042 has 4 divisors (see below), whose sum is σ = 9816096066. Its totient is φ = 3272032020.

The previous prime is 6544064041. The next prime is 6544064053. The reversal of 6544064042 is 2404604456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6522339121 + 21724921 = 80761^2 + 4661^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6544063993 and 6544064011.

It is not an unprimeable number, because it can be changed into a prime (6544064041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1636016009 + ... + 1636016012.

Almost surely, 2^6544064042 is an apocalyptic number.

6544064042 is a deficient number, since it is larger than the sum of its proper divisors (3272032024).

6544064042 is a wasteful number, since it uses less digits than its factorization.

6544064042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3272032023.

The product of its (nonzero) digits is 92160, while the sum is 35.

The square root of 6544064042 is about 80895.3894977952. The cubic root of 6544064042 is about 1870.4632520214.

Adding to 6544064042 its reverse (2404604456), we get a palindrome (8948668498).

The spelling of 6544064042 in words is "six billion, five hundred forty-four million, sixty-four thousand, forty-two".