16544785819 has 8 divisors (see below), whose sum is σ = 17532450000. Its totient is φ = 15568810272.

The previous prime is 16544785771. The next prime is 16544785837. The reversal of 16544785819 is 91858744561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16544785819 is a prime.

It is a super-2 number, since 2×16544785819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16544785319) 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, 2919244 + ... + 2924905.

It is an arithmetic number, because the mean of its divisors is an integer number (2191556250).

Almost surely, 2^16544785819 is an apocalyptic number.

16544785819 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16544785819 is a deficient number, since it is larger than the sum of its proper divisors (987664181).

16544785819 is a wasteful number, since it uses less digits than its factorization.

16544785819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844317.

The product of its digits is 9676800, while the sum is 58.

The spelling of 16544785819 in words is "sixteen billion, five hundred forty-four million, seven hundred eighty-five thousand, eight hundred nineteen".