138138875222 has 8 divisors (see below), whose sum is σ = 207940498536. Its totient is φ = 68825375712.

The previous prime is 138138875209. The next prime is 138138875293. The reversal of 138138875222 is 222578831831.

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, 122030243 + ... + 122031374.

It is an arithmetic number, because the mean of its divisors is an integer number (25992562317).

Almost surely, 2^138138875222 is an apocalyptic number.

138138875222 is a deficient number, since it is larger than the sum of its proper divisors (69801623314).

138138875222 is a wasteful number, since it uses less digits than its factorization.

138138875222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244061902.

The product of its digits is 1290240, while the sum is 50.

The spelling of 138138875222 in words is "one hundred thirty-eight billion, one hundred thirty-eight million, eight hundred seventy-five thousand, two hundred twenty-two".