165501516066 has 16 divisors (see below), whose sum is σ = 350473798944. Its totient is φ = 51922044224.

The previous prime is 165501516029. The next prime is 165501516101. The reversal of 165501516066 is 660615105561.

It is a super-2 number, since 2×165501516066² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811281840 + ... + 811282043.

It is an arithmetic number, because the mean of its divisors is an integer number (21904612434).

Almost surely, 2^165501516066 is an apocalyptic number.

165501516066 is an abundant number, since it is smaller than the sum of its proper divisors (184972282878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165501516066 is a wasteful number, since it uses less digits than its factorization.

165501516066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622563905.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 165501516066 in words is "one hundred sixty-five billion, five hundred one million, five hundred sixteen thousand, sixty-six".