20384516239 has 2 divisors, whose sum is σ = 20384516240. Its totient is φ = 20384516238.

The previous prime is 20384516219. The next prime is 20384516351. The reversal of 20384516239 is 93261548302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20384516239 - 2¹¹ = 20384514191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20384516195 and 20384516204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20384516219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10192258119 + 10192258120.

It is an arithmetic number, because the mean of its divisors is an integer number (10192258120).

Almost surely, 2^20384516239 is an apocalyptic number.

20384516239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20384516239 is an equidigital number, since it uses as much as digits as its factorization.

20384516239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 20384516239 in words is "twenty billion, three hundred eighty-four million, five hundred sixteen thousand, two hundred thirty-nine".