165166550116 has 6 divisors (see below), whose sum is σ = 289041462710. Its totient is φ = 82583275056.

The previous prime is 165166550111. The next prime is 165166550239. The reversal of 165166550116 is 611055661561.

It can be written as a sum of positive squares in only one way, i.e., 162570240000 + 2596310116 = 403200^2 + 50954^2 .

It is a super-2 number, since 2×165166550116² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165166550111) 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 as a sum of consecutive naturals, namely, 20645818761 + ... + 20645818768.

Almost surely, 2^165166550116 is an apocalyptic number.

It is an amenable number.

165166550116 is a deficient number, since it is larger than the sum of its proper divisors (123874912594).

165166550116 is a wasteful number, since it uses less digits than its factorization.

165166550116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41291637533 (or 41291637531 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 165166550116 in words is "one hundred sixty-five billion, one hundred sixty-six million, five hundred fifty thousand, one hundred sixteen".