206113252061 has 2 divisors, whose sum is σ = 206113252062. Its totient is φ = 206113252060.

The previous prime is 206113251973. The next prime is 206113252067. The reversal of 206113252061 is 160252311602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190177976836 + 15935275225 = 436094^2 + 126235^2 .

It is a cyclic number.

It is not a de Polignac number, because 206113252061 - 2¹⁰ = 206113251037 is a prime.

It is a super-2 number, since 2×206113252061² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206113252067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103056626030 + 103056626031.

It is an arithmetic number, because the mean of its divisors is an integer number (103056626031).

Almost surely, 2^206113252061 is an apocalyptic number.

It is an amenable number.

206113252061 is a deficient number, since it is larger than the sum of its proper divisors (1).

206113252061 is an equidigital number, since it uses as much as digits as its factorization.

206113252061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 206113252061 its reverse (160252311602), we get a palindrome (366365563663).

The spelling of 206113252061 in words is "two hundred six billion, one hundred thirteen million, two hundred fifty-two thousand, sixty-one".