20066666341 has 2 divisors, whose sum is σ = 20066666342. Its totient is φ = 20066666340.

The previous prime is 20066666317. The next prime is 20066666357. The reversal of 20066666341 is 14366666002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13754363841 + 6312302500 = 117279^2 + 79450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20066666341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20066666294 and 20066666303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20066666371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10033333170 + 10033333171.

It is an arithmetic number, because the mean of its divisors is an integer number (10033333171).

Almost surely, 2^20066666341 is an apocalyptic number.

It is an amenable number.

20066666341 is a deficient number, since it is larger than the sum of its proper divisors (1).

20066666341 is an equidigital number, since it uses as much as digits as its factorization.

20066666341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 40.

The spelling of 20066666341 in words is "twenty billion, sixty-six million, six hundred sixty-six thousand, three hundred forty-one".