6544464534 has 72 divisors (see below), whose sum is σ = 15090002928. Its totient is φ = 2049465600.

The previous prime is 6544464523. The next prime is 6544464571. The reversal of 6544464534 is 4354644456.

6544464534 is a `hidden beast` number, since 6 + 54 + 4 + 4 + 64 + 534 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 6544464534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5029684 + ... + 5030984.

It is an arithmetic number, because the mean of its divisors is an integer number (209583374).

Almost surely, 2^6544464534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6544464534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7545001464).

6544464534 is an abundant number, since it is smaller than the sum of its proper divisors (8545538394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6544464534 is a wasteful number, since it uses less digits than its factorization.

6544464534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310 (or 2290 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 45.

The square root of 6544464534 is about 80897.8648296727. The cubic root of 6544464534 is about 1870.5014082437.

The spelling of 6544464534 in words is "six billion, five hundred forty-four million, four hundred sixty-four thousand, five hundred thirty-four".