16502320065 has 32 divisors (see below), whose sum is σ = 32918916096. Its totient is φ = 6858106560.

The previous prime is 16502320063. The next prime is 16502320099. The reversal of 16502320065 is 56002320561.

It is not a de Polignac number, because 16502320065 - 2¹ = 16502320063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16502320063) 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, 7142707 + ... + 7145016.

It is an arithmetic number, because the mean of its divisors is an integer number (1028716128).

Almost surely, 2^16502320065 is an apocalyptic number.

16502320065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16502320065 is a deficient number, since it is larger than the sum of its proper divisors (16416596031).

16502320065 is a wasteful number, since it uses less digits than its factorization.

16502320065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14287749.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 16502320065 in words is "sixteen billion, five hundred two million, three hundred twenty thousand, sixty-five".