16165066611663 has 6 divisors (see below), whose sum is σ = 23349540661304. Its totient is φ = 10776711074436.

The previous prime is 16165066611613. The next prime is 16165066611667. The reversal of 16165066611663 is 36611666056161.

It is not a de Polignac number, because 16165066611663 - 2¹⁸ = 16165066349519 is a prime.

It is a super-2 number, since 2×16165066611663² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16165066611667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 898059256195 + ... + 898059256212.

Almost surely, 2^{16165066611663} is an apocalyptic number.

16165066611663 is a deficient number, since it is larger than the sum of its proper divisors (7184474049641).

16165066611663 is a wasteful number, since it uses less digits than its factorization.

16165066611663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796118512413 (or 1796118512410 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 16165066611663 in words is "sixteen trillion, one hundred sixty-five billion, sixty-six million, six hundred eleven thousand, six hundred sixty-three".