138986000065 has 32 divisors (see below), whose sum is σ = 191568240000. Its totient is φ = 95737259520.

The previous prime is 138986000009. The next prime is 138986000077. The reversal of 138986000065 is 560000689831.

138986000065 is a nontrivial binomial coefficient, being equal to C(527231, 2).

It is not a de Polignac number, because 138986000065 - 2¹³ = 138985991873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138985999979 and 138986000024.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4994811 + ... + 5022559.

It is an arithmetic number, because the mean of its divisors is an integer number (5986507500).

Almost surely, 2^138986000065 is an apocalyptic number.

138986000065 is the 527230-th triangular number.

138986000065 is the 175744-th centered nonagonal number.

It is an amenable number.

138986000065 is a deficient number, since it is larger than the sum of its proper divisors (52582239935).

138986000065 is a wasteful number, since it uses less digits than its factorization.

138986000065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32577.

The product of its (nonzero) digits is 311040, while the sum is 46.

Adding to 138986000065 its reverse (560000689831), we get a palindrome (698986689896).

The spelling of 138986000065 in words is "one hundred thirty-eight billion, nine hundred eighty-six million, sixty-five", and thus it is an aban number.