138413478145 has 16 divisors (see below), whose sum is σ = 169461673920. Its totient is φ = 108499345344.

The previous prime is 138413478109. The next prime is 138413478149. The reversal of 138413478145 is 541874314831.

It is a cyclic number.

It is not a de Polignac number, because 138413478145 - 2⁷ = 138413478017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138413478149) 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 15 ways as a sum of consecutive naturals, for example, 673602 + ... + 854731.

It is an arithmetic number, because the mean of its divisors is an integer number (10591354620).

Almost surely, 2^138413478145 is an apocalyptic number.

It is an amenable number.

138413478145 is a deficient number, since it is larger than the sum of its proper divisors (31048195775).

138413478145 is a wasteful number, since it uses less digits than its factorization.

138413478145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528704.

The product of its digits is 1290240, while the sum is 49.

The spelling of 138413478145 in words is "one hundred thirty-eight billion, four hundred thirteen million, four hundred seventy-eight thousand, one hundred forty-five".