138825851729 has 8 divisors (see below), whose sum is σ = 141455583360. Its totient is φ = 136196504496.

The previous prime is 138825851713. The next prime is 138825851767. The reversal of 138825851729 is 927158528831.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 138825851729 - 2⁴ = 138825851713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138825851629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693962 + ... + 871340.

It is an arithmetic number, because the mean of its divisors is an integer number (17681947920).

Almost surely, 2^138825851729 is an apocalyptic number.

It is an amenable number.

138825851729 is a deficient number, since it is larger than the sum of its proper divisors (2629731631).

138825851729 is a wasteful number, since it uses less digits than its factorization.

138825851729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192199.

The product of its digits is 9676800, while the sum is 59.

The spelling of 138825851729 in words is "one hundred thirty-eight billion, eight hundred twenty-five million, eight hundred fifty-one thousand, seven hundred twenty-nine".