138329908476 has 24 divisors (see below), whose sum is σ = 333899779920. Its totient is φ = 44519970432.

The previous prime is 138329908439. The next prime is 138329908477. The reversal of 138329908476 is 674809923831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138329908477) 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, 198749521 + ... + 198750216.

It is an arithmetic number, because the mean of its divisors is an integer number (13912490830).

Almost surely, 2^138329908476 is an apocalyptic number.

It is an amenable number.

138329908476 is an abundant number, since it is smaller than the sum of its proper divisors (195569871444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138329908476 is a wasteful number, since it uses less digits than its factorization.

138329908476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397499773 (or 397499771 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 138329908476 in words is "one hundred thirty-eight billion, three hundred twenty-nine million, nine hundred eight thousand, four hundred seventy-six".