16380499989 has 16 divisors (see below), whose sum is σ = 24978522240. Its totient is φ = 9353625600.

The previous prime is 16380499981. The next prime is 16380499999. The reversal of 16380499989 is 98999408361.

It is not a de Polignac number, because 16380499989 - 2³ = 16380499981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16380499981) 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, 247212 + ... + 306389.

It is an arithmetic number, because the mean of its divisors is an integer number (1561157640).

Almost surely, 2^16380499989 is an apocalyptic number.

It is an amenable number.

16380499989 is a deficient number, since it is larger than the sum of its proper divisors (8598022251).

16380499989 is a wasteful number, since it uses less digits than its factorization.

16380499989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555020.

The product of its (nonzero) digits is 30233088, while the sum is 66.

The spelling of 16380499989 in words is "sixteen billion, three hundred eighty million, four hundred ninety-nine thousand, nine hundred eighty-nine".