6543454544 has 20 divisors (see below), whose sum is σ = 13830483840. Its totient is φ = 2974297440.

The previous prime is 6543454543. The next prime is 6543454553. The reversal of 6543454544 is 4454543456.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 6543454495 and 6543454504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543454543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18589184 + ... + 18589535.

It is an arithmetic number, because the mean of its divisors is an integer number (691524192).

Almost surely, 2^6543454544 is an apocalyptic number.

It is an amenable number.

6543454544 is an abundant number, since it is smaller than the sum of its proper divisors (7287029296).

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

6543454544 is a wasteful number, since it uses less digits than its factorization.

6543454544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37178738 (or 37178732 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 44.

The square root of 6543454544 is about 80891.6222114503. The cubic root of 6543454544 is about 1870.4051801057.

The spelling of 6543454544 in words is "six billion, five hundred forty-three million, four hundred fifty-four thousand, five hundred forty-four".