138673531274 has 32 divisors (see below), whose sum is σ = 216109391040. Its totient is φ = 66658032000.

The previous prime is 138673531259. The next prime is 138673531279. The reversal of 138673531274 is 472135376831.

It is not an unprimeable number, because it can be changed into a prime (138673531279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29559269 + ... + 29563959.

It is an arithmetic number, because the mean of its divisors is an integer number (6753418470).

Almost surely, 2^138673531274 is an apocalyptic number.

138673531274 is a deficient number, since it is larger than the sum of its proper divisors (77435859766).

138673531274 is a wasteful number, since it uses less digits than its factorization.

138673531274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6806.

The product of its digits is 2540160, while the sum is 50.

The spelling of 138673531274 in words is "one hundred thirty-eight billion, six hundred seventy-three million, five hundred thirty-one thousand, two hundred seventy-four".