138502438347 has 32 divisors (see below), whose sum is σ = 227317708800. Its totient is φ = 73046056320.

The previous prime is 138502438337. The next prime is 138502438409. The reversal of 138502438347 is 743834205831.

It is not a de Polignac number, because 138502438347 - 2¹¹ = 138502436299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138502438296 and 138502438305.

It is not an unprimeable number, because it can be changed into a prime (138502438307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2183029 + ... + 2245577.

It is an arithmetic number, because the mean of its divisors is an integer number (7103678400).

Almost surely, 2^138502438347 is an apocalyptic number.

138502438347 is a deficient number, since it is larger than the sum of its proper divisors (88815270453).

138502438347 is a wasteful number, since it uses less digits than its factorization.

138502438347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70683.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 138502438347 in words is "one hundred thirty-eight billion, five hundred two million, four hundred thirty-eight thousand, three hundred forty-seven".