16166160155065 has 4 divisors (see below), whose sum is σ = 19399392186084. Its totient is φ = 12932928124048.

The previous prime is 16166160155003. The next prime is 16166160155071. The reversal of 16166160155065 is 56055106166161.

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 2516246167824 + 13649913987241 = 1586268^2 + 3694579^2 .

It is a cyclic number.

It is not a de Polignac number, because 16166160155065 - 2²¹ = 16166158057913 is a prime.

It is a super-2 number, since 2×16166160155065² (a number of 27 digits) contains 22 as substring.

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, 1616616015502 + ... + 1616616015511.

It is an arithmetic number, because the mean of its divisors is an integer number (4849848046521).

Almost surely, 2^{16166160155065} is an apocalyptic number.

It is an amenable number.

16166160155065 is a deficient number, since it is larger than the sum of its proper divisors (3233232031019).

16166160155065 is an equidigital number, since it uses as much as digits as its factorization.

16166160155065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233232031018.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 16166160155065 in words is "sixteen trillion, one hundred sixty-six billion, one hundred sixty million, one hundred fifty-five thousand, sixty-five".