198256882543 has 2 divisors, whose sum is σ = 198256882544. Its totient is φ = 198256882542.

The previous prime is 198256882529. The next prime is 198256882567. The reversal of 198256882543 is 345288652891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198256882543 - 2¹³ = 198256874351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198256880543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99128441271 + 99128441272.

It is an arithmetic number, because the mean of its divisors is an integer number (99128441272).

Almost surely, 2^198256882543 is an apocalyptic number.

198256882543 is a deficient number, since it is larger than the sum of its proper divisors (1).

198256882543 is an equidigital number, since it uses as much as digits as its factorization.

198256882543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33177600, while the sum is 61.

The spelling of 198256882543 in words is "one hundred ninety-eight billion, two hundred fifty-six million, eight hundred eighty-two thousand, five hundred forty-three".