198572543129 has 2 divisors, whose sum is σ = 198572543130. Its totient is φ = 198572543128.

The previous prime is 198572543089. The next prime is 198572543131. The reversal of 198572543129 is 921345275891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182886233104 + 15686310025 = 427652^2 + 125245^2 .

It is a cyclic number.

It is not a de Polignac number, because 198572543129 - 2³⁶ = 129853066393 is a prime.

It is a super-2 number, since 2×198572543129² (a number of 23 digits) contains 22 as substring.

Together with 198572543131, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198572593129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99286271564 + 99286271565.

It is an arithmetic number, because the mean of its divisors is an integer number (99286271565).

Almost surely, 2^198572543129 is an apocalyptic number.

It is an amenable number.

198572543129 is a deficient number, since it is larger than the sum of its proper divisors (1).

198572543129 is an equidigital number, since it uses as much as digits as its factorization.

198572543129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 56.

The spelling of 198572543129 in words is "one hundred ninety-eight billion, five hundred seventy-two million, five hundred forty-three thousand, one hundred twenty-nine".