83840108539 has 6 divisors (see below), whose sum is σ = 92154830180. Its totient is φ = 76218280380.

The previous prime is 83840108531. The next prime is 83840108543. The reversal of 83840108539 is 93580104838.

It is not a de Polignac number, because 83840108539 - 2³ = 83840108531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83840108492 and 83840108501.

It is not an unprimeable number, because it can be changed into a prime (83840108531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 346446609 + ... + 346446850.

Almost surely, 2^83840108539 is an apocalyptic number.

83840108539 is a deficient number, since it is larger than the sum of its proper divisors (8314721641).

83840108539 is a wasteful number, since it uses less digits than its factorization.

83840108539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692893481 (or 692893470 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 83840108539 in words is "eighty-three billion, eight hundred forty million, one hundred eight thousand, five hundred thirty-nine".