6665500160066 has 16 divisors (see below), whose sum is σ = 10979415079488. Its totient is φ = 3009708078000.

The previous prime is 6665500160063. The next prime is 6665500160131. The reversal of 6665500160066 is 6600610055666.

It is a super-2 number, since 2×6665500160066² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6665500160066.

It is not an unprimeable number, because it can be changed into a prime (6665500160063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003232705 + ... + 1003239348.

It is an arithmetic number, because the mean of its divisors is an integer number (686213442468).

Almost surely, 2^{6665500160066} is an apocalyptic number.

6665500160066 is a deficient number, since it is larger than the sum of its proper divisors (4313914919422).

6665500160066 is a wasteful number, since it uses less digits than its factorization.

6665500160066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006472217.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 6665500160066 in words is "six trillion, six hundred sixty-five billion, five hundred million, one hundred sixty thousand, sixty-six".