165160420168 has 16 divisors (see below), whose sum is σ = 312868323180. Its totient is φ = 81728867328.

The previous prime is 165160420163. The next prime is 165160420193. The reversal of 165160420168 is 861024061561.

It can be written as a sum of positive squares in 2 ways, for example, as 165159334404 + 1085764 = 406398^2 + 1042^2 .

It is a super-2 number, since 2×165160420168² (a number of 23 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 165160420168.

It is not an unprimeable number, because it can be changed into a prime (165160420163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106417021 + ... + 106418572.

Almost surely, 2^165160420168 is an apocalyptic number.

It is an amenable number.

165160420168 is a deficient number, since it is larger than the sum of its proper divisors (147707903012).

165160420168 is a wasteful number, since it uses less digits than its factorization.

165160420168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212835696 (or 212835692 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 165160420168 in words is "one hundred sixty-five billion, one hundred sixty million, four hundred twenty thousand, one hundred sixty-eight".