1660165560166 has 16 divisors (see below), whose sum is σ = 2499058680048. Its totient is φ = 827146706400.

The previous prime is 1660165560161. The next prime is 1660165560187. The reversal of 1660165560166 is 6610655610661.

It is a super-2 number, since 2×1660165560166² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660165560161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4645201 + ... + 4989811.

It is an arithmetic number, because the mean of its divisors is an integer number (156191167503).

Almost surely, 2^{1660165560166} is an apocalyptic number.

1660165560166 is a deficient number, since it is larger than the sum of its proper divisors (838893119882).

1660165560166 is a wasteful number, since it uses less digits than its factorization.

1660165560166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353127.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 1660165560166 in words is "one trillion, six hundred sixty billion, one hundred sixty-five million, five hundred sixty thousand, one hundred sixty-six".