138723655273 has 8 divisors (see below), whose sum is σ = 158563005120. Its totient is φ = 118889726640.

The previous prime is 138723655261. The next prime is 138723655333. The reversal of 138723655273 is 372556327831.

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 138723655273 - 2⁵ = 138723655241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138723655273.

It is not an unprimeable number, because it can be changed into a prime (138723655673) 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, 1300318 + ... + 1402951.

It is an arithmetic number, because the mean of its divisors is an integer number (19820375640).

Almost surely, 2^138723655273 is an apocalyptic number.

It is an amenable number.

138723655273 is a deficient number, since it is larger than the sum of its proper divisors (19839349847).

138723655273 is an equidigital number, since it uses as much as digits as its factorization.

138723655273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710607.

The product of its digits is 6350400, while the sum is 52.

The spelling of 138723655273 in words is "one hundred thirty-eight billion, seven hundred twenty-three million, six hundred fifty-five thousand, two hundred seventy-three".