138986000066 has 8 divisors (see below), whose sum is σ = 208482938640. Its totient is φ = 69491687188.

The previous prime is 138986000009. The next prime is 138986000077. The reversal of 138986000066 is 660000689831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a pancake number, because a pancake can be divided into 138986000066 parts by 527230 straight cuts.

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, 518276 + ... + 739311.

It is an arithmetic number, because the mean of its divisors is an integer number (26060367330).

Almost surely, 2^138986000066 is an apocalyptic number.

138986000066 is a deficient number, since it is larger than the sum of its proper divisors (69496938574).

138986000066 is a wasteful number, since it uses less digits than its factorization.

138986000066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312848.

The product of its (nonzero) digits is 373248, while the sum is 47.

Adding to 138986000066 its reverse (660000689831), we get a palindrome (798986689897).

The spelling of 138986000066 in words is "one hundred thirty-eight billion, nine hundred eighty-six million, sixty-six", and thus it is an aban number.