16205340064 has 24 divisors (see below), whose sum is σ = 31919711040. Its totient is φ = 8098746816.

The previous prime is 16205340061. The next prime is 16205340089. The reversal of 16205340064 is 46004350261.

It is a super-2 number, since 2×16205340064² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16205340061) 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 3 ways as a sum of consecutive naturals, for example, 54904 + ... + 188215.

It is an arithmetic number, because the mean of its divisors is an integer number (1329987960).

Almost surely, 2^16205340064 is an apocalyptic number.

It is an amenable number.

16205340064 is a deficient number, since it is larger than the sum of its proper divisors (15714370976).

16205340064 is a wasteful number, since it uses less digits than its factorization.

16205340064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245212 (or 245204 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 16205340064 in words is "sixteen billion, two hundred five million, three hundred forty thousand, sixty-four".