138488659212 has 12 divisors (see below), whose sum is σ = 323140204856. Its totient is φ = 46162886400.

The previous prime is 138488659201. The next prime is 138488659277. The reversal of 138488659212 is 212956884831.

It is a tau number, because it is divible by the number of its divisors (12).

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, 5770360789 + ... + 5770360812.

Almost surely, 2^138488659212 is an apocalyptic number.

138488659212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138488659212 is an abundant number, since it is smaller than the sum of its proper divisors (184651545644).

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

138488659212 is a wasteful number, since it uses less digits than its factorization.

138488659212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11540721608 (or 11540721606 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 57.

The spelling of 138488659212 in words is "one hundred thirty-eight billion, four hundred eighty-eight million, six hundred fifty-nine thousand, two hundred twelve".