10207236661 has 2 divisors, whose sum is σ = 10207236662. Its totient is φ = 10207236660.

The previous prime is 10207236629. The next prime is 10207236701. The reversal of 10207236661 is 16663270201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7636138225 + 2571098436 = 87385^2 + 50706^2 .

It is a cyclic number.

It is not a de Polignac number, because 10207236661 - 2⁵ = 10207236629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10207636661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5103618330 + 5103618331.

It is an arithmetic number, because the mean of its divisors is an integer number (5103618331).

Almost surely, 2^10207236661 is an apocalyptic number.

It is an amenable number.

10207236661 is a deficient number, since it is larger than the sum of its proper divisors (1).

10207236661 is an equidigital number, since it uses as much as digits as its factorization.

10207236661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 10207236661 in words is "ten billion, two hundred seven million, two hundred thirty-six thousand, six hundred sixty-one".