206262621193 has 2 divisors, whose sum is σ = 206262621194. Its totient is φ = 206262621192.

The previous prime is 206262621119. The next prime is 206262621241. The reversal of 206262621193 is 391126262602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129176985744 + 77085635449 = 359412^2 + 277643^2 .

It is a cyclic number.

It is not a de Polignac number, because 206262621193 - 2¹⁷ = 206262490121 is a prime.

It is not a weakly prime, because it can be changed into another prime (206262621293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103131310596 + 103131310597.

It is an arithmetic number, because the mean of its divisors is an integer number (103131310597).

Almost surely, 2^206262621193 is an apocalyptic number.

It is an amenable number.

206262621193 is a deficient number, since it is larger than the sum of its proper divisors (1).

206262621193 is an equidigital number, since it uses as much as digits as its factorization.

206262621193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 40.

Adding to 206262621193 its reverse (391126262602), we get a palindrome (597388883795).

The spelling of 206262621193 in words is "two hundred six billion, two hundred sixty-two million, six hundred twenty-one thousand, one hundred ninety-three".