138066328684 has 6 divisors (see below), whose sum is σ = 241616075204. Its totient is φ = 69033164340.

The previous prime is 138066328651. The next prime is 138066328703. The reversal of 138066328684 is 486823660831.

It is a super-2 number, since 2×138066328684² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17258291082 + ... + 17258291089.

Almost surely, 2^138066328684 is an apocalyptic number.

It is an amenable number.

138066328684 is a deficient number, since it is larger than the sum of its proper divisors (103549746520).

138066328684 is a wasteful number, since it uses less digits than its factorization.

138066328684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34516582175 (or 34516582173 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 55.

The spelling of 138066328684 in words is "one hundred thirty-eight billion, sixty-six million, three hundred twenty-eight thousand, six hundred eighty-four".