6543066455 has 4 divisors (see below), whose sum is σ = 7851679752. Its totient is φ = 5234453160.

The previous prime is 6543066443. The next prime is 6543066457. The reversal of 6543066455 is 5546603456.

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

It is not a de Polignac number, because 6543066455 - 2¹⁴ = 6543050071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543066457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654306641 + ... + 654306650.

It is an arithmetic number, because the mean of its divisors is an integer number (1962919938).

Almost surely, 2^6543066455 is an apocalyptic number.

6543066455 is a deficient number, since it is larger than the sum of its proper divisors (1308613297).

6543066455 is a wasteful number, since it uses less digits than its factorization.

6543066455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308613296.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The square root of 6543066455 is about 80889.2233551541. The cubic root of 6543066455 is about 1870.3682017776.

The spelling of 6543066455 in words is "six billion, five hundred forty-three million, sixty-six thousand, four hundred fifty-five".