16320538477859 has 32 divisors (see below), whose sum is σ = 21419123404800. Its totient is φ = 12047685063840.

The previous prime is 16320538477849. The next prime is 16320538477871. The reversal of 16320538477859 is 95877483502361.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16320538477859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16320538477849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76816994 + ... + 77029160.

It is an arithmetic number, because the mean of its divisors is an integer number (669347606400).

It is a 2-persistent number, because it is pandigital, and so is 2⋅16320538477859 = 32641076955718, but 3⋅16320538477859 = 48961615433577 is not.

Almost surely, 2^{16320538477859} is an apocalyptic number.

16320538477859 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16320538477859 is a deficient number, since it is larger than the sum of its proper divisors (5098584926941).

16320538477859 is a wasteful number, since it uses less digits than its factorization.

16320538477859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264783.

The product of its (nonzero) digits is 304819200, while the sum is 68.

The spelling of 16320538477859 in words is "sixteen trillion, three hundred twenty billion, five hundred thirty-eight million, four hundred seventy-seven thousand, eight hundred fifty-nine".