138548719872 has 216 divisors, whose sum is σ = 421256544800. Its totient is φ = 43673001984.

The previous prime is 138548719871. The next prime is 138548719927. The reversal of 138548719872 is 278917845831.

138548719872 is a `hidden beast` number, since 1 + 3 + 8 + 548 + 7 + 1 + 9 + 87 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (138548719871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27094788 + ... + 27099900.

Almost surely, 2^138548719872 is an apocalyptic number.

138548719872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138548719872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210628272400).

138548719872 is an abundant number, since it is smaller than the sum of its proper divisors (282707824928).

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

138548719872 is a wasteful number, since it uses less digits than its factorization.

138548719872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773 (or 5756 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 63.

The spelling of 138548719872 in words is "one hundred thirty-eight billion, five hundred forty-eight million, seven hundred nineteen thousand, eight hundred seventy-two".