138706229375 has 120 divisors (see below), whose sum is σ = 211698634752. Its totient is φ = 90413400000.

The previous prime is 138706229369. The next prime is 138706229411. The reversal of 138706229375 is 573922607831.

It is a happy number.

It is not a de Polignac number, because 138706229375 - 2¹² = 138706225279 is a prime.

It is a super-2 number, since 2×138706229375² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 134535110 + ... + 134536140.

Almost surely, 2^138706229375 is an apocalyptic number.

138706229375 is a deficient number, since it is larger than the sum of its proper divisors (72992405377).

138706229375 is a wasteful number, since it uses less digits than its factorization.

138706229375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 138706229375 in words is "one hundred thirty-eight billion, seven hundred six million, two hundred twenty-nine thousand, three hundred seventy-five".