138604719227 has 16 divisors (see below), whose sum is σ = 149875500768. Its totient is φ = 127421648640.

The previous prime is 138604719221. The next prime is 138604719257. The reversal of 138604719227 is 722917406831.

It is not a de Polignac number, because 138604719227 - 2¹⁸ = 138604457083 is a prime.

It is a super-2 number, since 2×138604719227² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138604719221) 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, 4791068 + ... + 4819910.

It is an arithmetic number, because the mean of its divisors is an integer number (9367218798).

Almost surely, 2^138604719227 is an apocalyptic number.

138604719227 is a deficient number, since it is larger than the sum of its proper divisors (11270781541).

138604719227 is a wasteful number, since it uses less digits than its factorization.

138604719227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30350.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 138604719227 in words is "one hundred thirty-eight billion, six hundred four million, seven hundred nineteen thousand, two hundred twenty-seven".