16389786543 has 8 divisors (see below), whose sum is σ = 23534052528. Its totient is φ = 10086022464.

The previous prime is 16389786503. The next prime is 16389786551. The reversal of 16389786543 is 34568798361.

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

It is not a de Polignac number, because 16389786543 - 2⁹ = 16389786031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16389786503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210125430 + ... + 210125507.

It is an arithmetic number, because the mean of its divisors is an integer number (2941756566).

Almost surely, 2^16389786543 is an apocalyptic number.

16389786543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16389786543 is a deficient number, since it is larger than the sum of its proper divisors (7144265985).

16389786543 is a wasteful number, since it uses less digits than its factorization.

16389786543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420250953.

The product of its digits is 26127360, while the sum is 60.

The spelling of 16389786543 in words is "sixteen billion, three hundred eighty-nine million, seven hundred eighty-six thousand, five hundred forty-three".