206561150452471 has 2 divisors, whose sum is σ = 206561150452472. Its totient is φ = 206561150452470.

The previous prime is 206561150452469. The next prime is 206561150452511. The reversal of 206561150452471 is 174254051165602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206561150452471 - 2¹ = 206561150452469 is a prime.

It is a super-3 number, since 3×206561150452471³ (a number of 44 digits) contains 333 as substring.

Together with 206561150452469, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206561150450471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103280575226235 + 103280575226236.

It is an arithmetic number, because the mean of its divisors is an integer number (103280575226236).

Almost surely, 2^{206561150452471} is an apocalyptic number.

206561150452471 is a deficient number, since it is larger than the sum of its proper divisors (1).

206561150452471 is an equidigital number, since it uses as much as digits as its factorization.

206561150452471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 206561150452471 in words is "two hundred six trillion, five hundred sixty-one billion, one hundred fifty million, four hundred fifty-two thousand, four hundred seventy-one".