138155244326 has 32 divisors (see below), whose sum is σ = 239404999680. Its totient is φ = 59095350400.

The previous prime is 138155244317. The next prime is 138155244329. The reversal of 138155244326 is 623442551831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138155244329) 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 15 ways as a sum of consecutive naturals, for example, 3055955 + ... + 3100833.

It is an arithmetic number, because the mean of its divisors is an integer number (7481406240).

Almost surely, 2^138155244326 is an apocalyptic number.

138155244326 is a deficient number, since it is larger than the sum of its proper divisors (101249755354).

138155244326 is a wasteful number, since it uses less digits than its factorization.

138155244326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53140.

The product of its digits is 691200, while the sum is 44.

The spelling of 138155244326 in words is "one hundred thirty-eight billion, one hundred fifty-five million, two hundred forty-four thousand, three hundred twenty-six".