206141450261 has 2 divisors, whose sum is σ = 206141450262. Its totient is φ = 206141450260.

The previous prime is 206141450191. The next prime is 206141450269. The reversal of 206141450261 is 162054141602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132491632036 + 73649818225 = 363994^2 + 271385^2 .

It is a cyclic number.

It is not a de Polignac number, because 206141450261 - 2²² = 206137255957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206141450269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103070725130 + 103070725131.

It is an arithmetic number, because the mean of its divisors is an integer number (103070725131).

Almost surely, 2^206141450261 is an apocalyptic number.

It is an amenable number.

206141450261 is a deficient number, since it is larger than the sum of its proper divisors (1).

206141450261 is an equidigital number, since it uses as much as digits as its factorization.

206141450261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 206141450261 its reverse (162054141602), we get a palindrome (368195591863).

The spelling of 206141450261 in words is "two hundred six billion, one hundred forty-one million, four hundred fifty thousand, two hundred sixty-one".