16166066015105 has 16 divisors (see below), whose sum is σ = 20075415872400. Its totient is φ = 12482414864640.

The previous prime is 16166066015089. The next prime is 16166066015119. The reversal of 16166066015105 is 50151066066161.

It can be written as a sum of positive squares in 8 ways, for example, as 452833439041 + 15713232576064 = 672929^2 + 3963992^2 .

It is not a de Polignac number, because 16166066015105 - 2⁴ = 16166066015089 is a prime.

It is a super-2 number, since 2×16166066015105² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19583066 + ... + 20391875.

It is an arithmetic number, because the mean of its divisors is an integer number (1254713492025).

Almost surely, 2^{16166066015105} is an apocalyptic number.

It is an amenable number.

16166066015105 is a deficient number, since it is larger than the sum of its proper divisors (3909349857295).

16166066015105 is a wasteful number, since it uses less digits than its factorization.

16166066015105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39977764.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 16166066015105 in words is "sixteen trillion, one hundred sixty-six billion, sixty-six million, fifteen thousand, one hundred five".