10008808661 has 2 divisors, whose sum is σ = 10008808662. Its totient is φ = 10008808660.

The previous prime is 10008808637. The next prime is 10008808669. The reversal of 10008808661 is 16680880001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9009616561 + 999192100 = 94919^2 + 31610^2 .

It is an emirp because it is prime and its reverse (16680880001) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 19980880001 and 10008808991.

It is a cyclic number.

It is not a de Polignac number, because 10008808661 - 2¹⁰ = 10008807637 is a prime.

It is a super-2 number, since 2×10008808661² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10008808669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5004404330 + 5004404331.

It is an arithmetic number, because the mean of its divisors is an integer number (5004404331).

Almost surely, 2^10008808661 is an apocalyptic number.

It is an amenable number.

10008808661 is a deficient number, since it is larger than the sum of its proper divisors (1).

10008808661 is an equidigital number, since it uses as much as digits as its factorization.

10008808661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 38.

The spelling of 10008808661 in words is "ten billion, eight million, eight hundred eight thousand, six hundred sixty-one".