16465362065 has 16 divisors (see below), whose sum is σ = 20073906000. Its totient is φ = 12962783232.

The previous prime is 16465362049. The next prime is 16465362079. The reversal of 16465362065 is 56026356461.

It can be written as a sum of positive squares in 8 ways, for example, as 1034008336 + 15431353729 = 32156^2 + 124223^2 .

It is a cyclic number.

It is not a de Polignac number, because 16465362065 - 2⁴ = 16465362049 is a prime.

It is a super-2 number, since 2×16465362065² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 113651 + ... + 214119.

It is an arithmetic number, because the mean of its divisors is an integer number (1254619125).

Almost surely, 2^16465362065 is an apocalyptic number.

It is an amenable number.

16465362065 is a deficient number, since it is larger than the sum of its proper divisors (3608543935).

16465362065 is a wasteful number, since it uses less digits than its factorization.

16465362065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100996.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 16465362065 in words is "sixteen billion, four hundred sixty-five million, three hundred sixty-two thousand, sixty-five".