6445028543 has 2 divisors, whose sum is σ = 6445028544. Its totient is φ = 6445028542.

The previous prime is 6445028531. The next prime is 6445028609. The reversal of 6445028543 is 3458205446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6445028543 - 2²⁶ = 6377919679 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6445028543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6445028243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222514271 + 3222514272.

It is an arithmetic number, because the mean of its divisors is an integer number (3222514272).

Almost surely, 2^6445028543 is an apocalyptic number.

6445028543 is a deficient number, since it is larger than the sum of its proper divisors (1).

6445028543 is an equidigital number, since it uses as much as digits as its factorization.

6445028543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460800, while the sum is 41.

The square root of 6445028543 is about 80280.9351153809. The cubic root of 6445028543 is about 1860.9796110611.

The spelling of 6445028543 in words is "six billion, four hundred forty-five million, twenty-eight thousand, five hundred forty-three".