20000216839 has 2 divisors, whose sum is σ = 20000216840. Its totient is φ = 20000216838.

The previous prime is 20000216813. The next prime is 20000216843. The reversal of 20000216839 is 93861200002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20000216839 - 2²³ = 19991828231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20000216839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000216239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000108419 + 10000108420.

It is an arithmetic number, because the mean of its divisors is an integer number (10000108420).

Almost surely, 2^20000216839 is an apocalyptic number.

20000216839 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000216839 is an equidigital number, since it uses as much as digits as its factorization.

20000216839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 20000216839 in words is "twenty billion, two hundred sixteen thousand, eight hundred thirty-nine".