208198136143 has 2 divisors, whose sum is σ = 208198136144. Its totient is φ = 208198136142.

The previous prime is 208198136129. The next prime is 208198136173. The reversal of 208198136143 is 341631891802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 208198136143 - 2⁹ = 208198135631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 208198136093 and 208198136102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208198136173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104099068071 + 104099068072.

It is an arithmetic number, because the mean of its divisors is an integer number (104099068072).

Almost surely, 2^208198136143 is an apocalyptic number.

208198136143 is a deficient number, since it is larger than the sum of its proper divisors (1).

208198136143 is an equidigital number, since it uses as much as digits as its factorization.

208198136143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 208198136143 in words is "two hundred eight billion, one hundred ninety-eight million, one hundred thirty-six thousand, one hundred forty-three".