6394858652543 has 2 divisors, whose sum is σ = 6394858652544. Its totient is φ = 6394858652542.

The previous prime is 6394858652477. The next prime is 6394858652573. The reversal of 6394858652543 is 3452568584936.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6394858652543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6394858652573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197429326271 + 3197429326272.

It is an arithmetic number, because the mean of its divisors is an integer number (3197429326272).

Almost surely, 2^{6394858652543} is an apocalyptic number.

6394858652543 is a deficient number, since it is larger than the sum of its proper divisors (1).

6394858652543 is an equidigital number, since it uses as much as digits as its factorization.

6394858652543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496000, while the sum is 68.

The spelling of 6394858652543 in words is "six trillion, three hundred ninety-four billion, eight hundred fifty-eight million, six hundred fifty-two thousand, five hundred forty-three".