10066109891 has 2 divisors, whose sum is σ = 10066109892. Its totient is φ = 10066109890.

The previous prime is 10066109881. The next prime is 10066109899. The reversal of 10066109891 is 19890166001.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (19890166001) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 16860199001 and 10099106861.

It is a cyclic number.

It is not a de Polignac number, because 10066109891 - 2³⁰ = 8992368067 is a prime.

It is not a weakly prime, because it can be changed into another prime (10066109899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5033054945 + 5033054946.

It is an arithmetic number, because the mean of its divisors is an integer number (5033054946).

Almost surely, 2^10066109891 is an apocalyptic number.

10066109891 is a deficient number, since it is larger than the sum of its proper divisors (1).

10066109891 is an equidigital number, since it uses as much as digits as its factorization.

10066109891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 10066109891 in words is "ten billion, sixty-six million, one hundred nine thousand, eight hundred ninety-one".