138271284624 has 80 divisors (see below), whose sum is σ = 391632076800. Its totient is φ = 41689802880.

The previous prime is 138271284623. The next prime is 138271284647. The reversal of 138271284624 is 426482172831.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (138271284623) 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, 552912 + ... + 763055.

It is an arithmetic number, because the mean of its divisors is an integer number (4895400960).

Almost surely, 2^138271284624 is an apocalyptic number.

It is an amenable number.

138271284624 is an abundant number, since it is smaller than the sum of its proper divisors (253360792176).

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

138271284624 is a wasteful number, since it uses less digits than its factorization.

138271284624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316188 (or 1316182 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The spelling of 138271284624 in words is "one hundred thirty-eight billion, two hundred seventy-one million, two hundred eighty-four thousand, six hundred twenty-four".