206984127539191 has 2 divisors, whose sum is σ = 206984127539192. Its totient is φ = 206984127539190.

The previous prime is 206984127539183. The next prime is 206984127539219. The reversal of 206984127539191 is 191935721489602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206984127539191 - 2³ = 206984127539183 is a prime.

It is a super-2 number, since 2×206984127539191² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206984127539131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103492063769595 + 103492063769596.

It is an arithmetic number, because the mean of its divisors is an integer number (103492063769596).

It is a 2-persistent number, because it is pandigital, and so is 2⋅206984127539191 = 413968255078382, but 3⋅206984127539191 = 620952382617573 is not.

Almost surely, 2^{206984127539191} is an apocalyptic number.

206984127539191 is a deficient number, since it is larger than the sum of its proper divisors (1).

206984127539191 is an equidigital number, since it uses as much as digits as its factorization.

206984127539191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58786560, while the sum is 67.

The spelling of 206984127539191 in words is "two hundred six trillion, nine hundred eighty-four billion, one hundred twenty-seven million, five hundred thirty-nine thousand, one hundred ninety-one".