10665568189 has 2 divisors, whose sum is σ = 10665568190. Its totient is φ = 10665568188.

The previous prime is 10665568183. The next prime is 10665568219. The reversal of 10665568189 is 98186556601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8782876089 + 1882692100 = 93717^2 + 43390^2 .

It is a cyclic number.

It is not a de Polignac number, because 10665568189 - 2¹⁵ = 10665535421 is a prime.

It is a super-2 number, since 2×10665568189² (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 (10665568183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5332784094 + 5332784095.

It is an arithmetic number, because the mean of its divisors is an integer number (5332784095).

Almost surely, 2^10665568189 is an apocalyptic number.

It is an amenable number.

10665568189 is a deficient number, since it is larger than the sum of its proper divisors (1).

10665568189 is an equidigital number, since it uses as much as digits as its factorization.

10665568189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 55.

The spelling of 10665568189 in words is "ten billion, six hundred sixty-five million, five hundred sixty-eight thousand, one hundred eighty-nine".