16386865518 has 16 divisors (see below), whose sum is σ = 32963176656. Its totient is φ = 5430714240.

The previous prime is 16386865507. The next prime is 16386865519. The reversal of 16386865518 is 81556868361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16386865519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7892443 + ... + 7894518.

It is an arithmetic number, because the mean of its divisors is an integer number (2060198541).

Almost surely, 2^16386865518 is an apocalyptic number.

16386865518 is an abundant number, since it is smaller than the sum of its proper divisors (16576311138).

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

16386865518 is a wasteful number, since it uses less digits than its factorization.

16386865518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15787139.

The product of its digits is 8294400, while the sum is 57.

The spelling of 16386865518 in words is "sixteen billion, three hundred eighty-six million, eight hundred sixty-five thousand, five hundred eighteen".