20050666336139 has 2 divisors, whose sum is σ = 20050666336140. Its totient is φ = 20050666336138.

The previous prime is 20050666336109. The next prime is 20050666336163. The reversal of 20050666336139 is 93163366605002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20050666336139 - 2¹⁶ = 20050666270603 is a prime.

It is not a weakly prime, because it can be changed into another prime (20050666336109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10025333168069 + 10025333168070.

It is an arithmetic number, because the mean of its divisors is an integer number (10025333168070).

Almost surely, 2^{20050666336139} is an apocalyptic number.

20050666336139 is a deficient number, since it is larger than the sum of its proper divisors (1).

20050666336139 is an equidigital number, since it uses as much as digits as its factorization.

20050666336139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3149280, while the sum is 50.

The spelling of 20050666336139 in words is "twenty trillion, fifty billion, six hundred sixty-six million, three hundred thirty-six thousand, one hundred thirty-nine".