138324476549 has 12 divisors (see below), whose sum is σ = 162470284704. Its totient is φ = 117412727544.

The previous prime is 138324476471. The next prime is 138324476557. The reversal of 138324476549 is 945674423831.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-138324476549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138324476494 and 138324476503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138324476569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13698587 + ... + 13708680.

It is an arithmetic number, because the mean of its divisors is an integer number (13539190392).

Almost surely, 2^138324476549 is an apocalyptic number.

It is an amenable number.

138324476549 is a deficient number, since it is larger than the sum of its proper divisors (24145808155).

138324476549 is a wasteful number, since it uses less digits than its factorization.

138324476549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27407384 (or 27407377 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 56.

The spelling of 138324476549 in words is "one hundred thirty-eight billion, three hundred twenty-four million, four hundred seventy-six thousand, five hundred forty-nine".