138075189585478 has 16 divisors (see below), whose sum is σ = 214267433345280. Its totient is φ = 66652996888576.

The previous prime is 138075189585439. The next prime is 138075189585511. The reversal of 138075189585478 is 874585981570831.

138075189585478 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 138075189585398 and 138075189585407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70294075 + ... + 72231622.

It is an arithmetic number, because the mean of its divisors is an integer number (13391714584080).

Almost surely, 2^{138075189585478} is an apocalyptic number.

138075189585478 is a deficient number, since it is larger than the sum of its proper divisors (76192243759802).

138075189585478 is a wasteful number, since it uses less digits than its factorization.

138075189585478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142542431.

The product of its (nonzero) digits is 2709504000, while the sum is 79.

The spelling of 138075189585478 in words is "one hundred thirty-eight trillion, seventy-five billion, one hundred eighty-nine million, five hundred eighty-five thousand, four hundred seventy-eight".