138748484272 has 20 divisors (see below), whose sum is σ = 268833496680. Its totient is φ = 69372098048.

The previous prime is 138748484243. The next prime is 138748484327. The reversal of 138748484272 is 272484847831.

It is a happy number.

It is a super-2 number, since 2×138748484272² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487104 + ... + 717472.

It is an arithmetic number, because the mean of its divisors is an integer number (13441674834).

Almost surely, 2^138748484272 is an apocalyptic number.

It is an amenable number.

138748484272 is a deficient number, since it is larger than the sum of its proper divisors (130085012408).

138748484272 is a wasteful number, since it uses less digits than its factorization.

138748484272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268020 (or 268014 counting only the distinct ones).

The product of its digits is 19267584, while the sum is 58.

The spelling of 138748484272 in words is "one hundred thirty-eight billion, seven hundred forty-eight million, four hundred eighty-four thousand, two hundred seventy-two".