16369708865 has 4 divisors (see below), whose sum is σ = 19643650644. Its totient is φ = 13095767088.

The previous prime is 16369708811. The next prime is 16369708877. The reversal of 16369708865 is 56880796361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10796041216 + 5573667649 = 103904^2 + 74657^2 .

It is a cyclic number.

It is not a de Polignac number, because 16369708865 - 2¹⁰ = 16369707841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1636970882 + ... + 1636970891.

It is an arithmetic number, because the mean of its divisors is an integer number (4910912661).

Almost surely, 2^16369708865 is an apocalyptic number.

It is an amenable number.

16369708865 is a deficient number, since it is larger than the sum of its proper divisors (3273941779).

16369708865 is an equidigital number, since it uses as much as digits as its factorization.

16369708865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273941778.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 16369708865 in words is "sixteen billion, three hundred sixty-nine million, seven hundred eight thousand, eight hundred sixty-five".