10500233561 has 2 divisors, whose sum is σ = 10500233562. Its totient is φ = 10500233560.

The previous prime is 10500233543. The next prime is 10500233567. The reversal of 10500233561 is 16533200501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9539233561 + 961000000 = 97669^2 + 31000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10500233561 is a prime.

It is a super-3 number, since 3×10500233561³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10500233561.

It is not a weakly prime, because it can be changed into another prime (10500233567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5250116780 + 5250116781.

It is an arithmetic number, because the mean of its divisors is an integer number (5250116781).

Almost surely, 2^10500233561 is an apocalyptic number.

It is an amenable number.

10500233561 is a deficient number, since it is larger than the sum of its proper divisors (1).

10500233561 is an equidigital number, since it uses as much as digits as its factorization.

10500233561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 10500233561 in words is "ten billion, five hundred million, two hundred thirty-three thousand, five hundred sixty-one".