20017706039 has 2 divisors, whose sum is σ = 20017706040. Its totient is φ = 20017706038.

The previous prime is 20017705999. The next prime is 20017706047. The reversal of 20017706039 is 93060771002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20017706039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20017706069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10008853019 + 10008853020.

It is an arithmetic number, because the mean of its divisors is an integer number (10008853020).

Almost surely, 2^20017706039 is an apocalyptic number.

20017706039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20017706039 is an equidigital number, since it uses as much as digits as its factorization.

20017706039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 35.

The spelling of 20017706039 in words is "twenty billion, seventeen million, seven hundred six thousand, thirty-nine".