6543454066 has 4 divisors (see below), whose sum is σ = 9815181102. Its totient is φ = 3271727032.

The previous prime is 6543454009. The next prime is 6543454097. The reversal of 6543454066 is 6604543456.

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., 6491686041 + 51768025 = 80571^2 + 7195^2 .

It is a super-2 number, since 2×6543454066² = 85633582227703864712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1635863515 + ... + 1635863518.

Almost surely, 2^6543454066 is an apocalyptic number.

6543454066 is a deficient number, since it is larger than the sum of its proper divisors (3271727036).

6543454066 is a wasteful number, since it uses less digits than its factorization.

6543454066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271727035.

The product of its (nonzero) digits is 1036800, while the sum is 43.

The square root of 6543454066 is about 80891.6192568798. The cubic root of 6543454066 is about 1870.4051345612.

The spelling of 6543454066 in words is "six billion, five hundred forty-three million, four hundred fifty-four thousand, sixty-six".