165150000018 has 24 divisors (see below), whose sum is σ = 367495947468. Its totient is φ = 53562161952.

The previous prime is 165150000017. The next prime is 165150000031. The reversal of 165150000018 is 810000051561.

165150000018 is a `hidden beast` number, since 1 + 651 + 5 + 0 + 0 + 0 + 0 + 0 + 1 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 113317737129 + 51832262889 = 336627^2 + 227667^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165149999946 and 165150000000.

It is not an unprimeable number, because it can be changed into a prime (165150000017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123985821 + ... + 123987152.

Almost surely, 2^165150000018 is an apocalyptic number.

165150000018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

165150000018 is an abundant number, since it is smaller than the sum of its proper divisors (202345947450).

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

165150000018 is a wasteful number, since it uses less digits than its factorization.

165150000018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247973018 (or 247973015 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

Adding to 165150000018 its reverse (810000051561), we get a palindrome (975150051579).

The spelling of 165150000018 in words is "one hundred sixty-five billion, one hundred fifty million, eighteen", and thus it is an aban number.