3818666839599 has 24 divisors (see below), whose sum is σ = 5544187220000. Its totient is φ = 2532702997440.

The previous prime is 3818666839583. The next prime is 3818666839613. The reversal of 3818666839599 is 9959386668183.

It is not a de Polignac number, because 3818666839599 - 2⁴ = 3818666839583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3818666839399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16630029 + ... + 16858089.

Almost surely, 2^{3818666839599} is an apocalyptic number.

3818666839599 is a deficient number, since it is larger than the sum of its proper divisors (1725520380401).

3818666839599 is a wasteful number, since it uses less digits than its factorization.

3818666839599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237615 (or 237612 counting only the distinct ones).

The product of its digits is 3627970560, while the sum is 81.

The spelling of 3818666839599 in words is "three trillion, eight hundred eighteen billion, six hundred sixty-six million, eight hundred thirty-nine thousand, five hundred ninety-nine".