10209823961 has 2 divisors, whose sum is σ = 10209823962. Its totient is φ = 10209823960.

The previous prime is 10209823937. The next prime is 10209823973. The reversal of 10209823961 is 16932890201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7153945561 + 3055878400 = 84581^2 + 55280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10209823961 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10209823361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5104911980 + 5104911981.

It is an arithmetic number, because the mean of its divisors is an integer number (5104911981).

Almost surely, 2^10209823961 is an apocalyptic number.

It is an amenable number.

10209823961 is a deficient number, since it is larger than the sum of its proper divisors (1).

10209823961 is an equidigital number, since it uses as much as digits as its factorization.

10209823961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 10209823961 in words is "ten billion, two hundred nine million, eight hundred twenty-three thousand, nine hundred sixty-one".