138943316899 has 8 divisors (see below), whose sum is σ = 139764823488. Its totient is φ = 138124231080.

The previous prime is 138943316819. The next prime is 138943316921. The reversal of 138943316899 is 998613349831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138943316899 - 2²⁹ = 138406445987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138943316899.

It is not an unprimeable number, because it can be changed into a prime (138943316819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489997 + ... + 719710.

It is an arithmetic number, because the mean of its divisors is an integer number (17470602936).

Almost surely, 2^138943316899 is an apocalyptic number.

138943316899 is a deficient number, since it is larger than the sum of its proper divisors (821506589).

138943316899 is a wasteful number, since it uses less digits than its factorization.

138943316899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210385.

The product of its digits is 30233088, while the sum is 64.

The spelling of 138943316899 in words is "one hundred thirty-eight billion, nine hundred forty-three million, three hundred sixteen thousand, eight hundred ninety-nine".