138667484388 has 48 divisors (see below), whose sum is σ = 340755800000. Its totient is φ = 43768003968.

The previous prime is 138667484381. The next prime is 138667484393. The reversal of 138667484388 is 883484766831.

It is not an unprimeable number, because it can be changed into a prime (138667484381) 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, 312738 + ... + 612486.

Almost surely, 2^138667484388 is an apocalyptic number.

It is an amenable number.

138667484388 is an abundant number, since it is smaller than the sum of its proper divisors (202088315612).

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

138667484388 is a wasteful number, since it uses less digits than its factorization.

138667484388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301804 (or 301802 counting only the distinct ones).

The product of its digits is 148635648, while the sum is 66.

The spelling of 138667484388 in words is "one hundred thirty-eight billion, six hundred sixty-seven million, four hundred eighty-four thousand, three hundred eighty-eight".