16809598340 has 24 divisors (see below), whose sum is σ = 35328930840. Its totient is φ = 6718358528.

The previous prime is 16809598339. The next prime is 16809598381. The reversal of 16809598340 is 4389590861.

It can be written as a sum of positive squares in 4 ways, for example, as 10226872384 + 6582725956 = 101128^2 + 81134^2 .

It is an unprimeable number.

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, 317357 + ... + 366516.

It is an arithmetic number, because the mean of its divisors is an integer number (1472038785).

Almost surely, 2^16809598340 is an apocalyptic number.

16809598340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16809598340 is an abundant number, since it is smaller than the sum of its proper divisors (18519332500).

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

16809598340 is a wasteful number, since it uses less digits than its factorization.

16809598340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685111 (or 685109 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 16809598340 in words is "sixteen billion, eight hundred nine million, five hundred ninety-eight thousand, three hundred forty".