10803195661 has 2 divisors, whose sum is σ = 10803195662. Its totient is φ = 10803195660.

The previous prime is 10803195659. The next prime is 10803195671. The reversal of 10803195661 is 16659130801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10775685636 + 27510025 = 103806^2 + 5245^2 .

It is an emirp because it is prime and its reverse (16659130801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10803195661 - 2¹ = 10803195659 is a prime.

Together with 10803195659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10803195631) 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, 5401597830 + 5401597831.

It is an arithmetic number, because the mean of its divisors is an integer number (5401597831).

Almost surely, 2^10803195661 is an apocalyptic number.

It is an amenable number.

10803195661 is a deficient number, since it is larger than the sum of its proper divisors (1).

10803195661 is an equidigital number, since it uses as much as digits as its factorization.

10803195661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 10803195661 in words is "ten billion, eight hundred three million, one hundred ninety-five thousand, six hundred sixty-one".