138012645158 has 8 divisors (see below), whose sum is σ = 207026860152. Its totient is φ = 69003691776.

The previous prime is 138012645143. The next prime is 138012645163. The reversal of 138012645158 is 851546210831.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1249160 + ... + 1355147.

It is an arithmetic number, because the mean of its divisors is an integer number (25878357519).

Almost surely, 2^138012645158 is an apocalyptic number.

138012645158 is a deficient number, since it is larger than the sum of its proper divisors (69014214994).

138012645158 is a wasteful number, since it uses less digits than its factorization.

138012645158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630806.

The product of its (nonzero) digits is 230400, while the sum is 44.

Adding to 138012645158 its reverse (851546210831), we get a palindrome (989558855989).

The spelling of 138012645158 in words is "one hundred thirty-eight billion, twelve million, six hundred forty-five thousand, one hundred fifty-eight".