198622657543 has 2 divisors, whose sum is σ = 198622657544. Its totient is φ = 198622657542.

The previous prime is 198622657487. The next prime is 198622657573. The reversal of 198622657543 is 345756226891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198622657543 - 2³³ = 190032722951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198622657573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99311328771 + 99311328772.

It is an arithmetic number, because the mean of its divisors is an integer number (99311328772).

Almost surely, 2^198622657543 is an apocalyptic number.

198622657543 is a deficient number, since it is larger than the sum of its proper divisors (1).

198622657543 is an equidigital number, since it uses as much as digits as its factorization.

198622657543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21772800, while the sum is 58.

The spelling of 198622657543 in words is "one hundred ninety-eight billion, six hundred twenty-two million, six hundred fifty-seven thousand, five hundred forty-three".