165005115018 has 32 divisors (see below), whose sum is σ = 334223635200. Its totient is φ = 54299621376.

The previous prime is 165005115013. The next prime is 165005115019. The reversal of 165005115018 is 810511500561.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 165005115018.

It is not an unprimeable number, because it can be changed into a prime (165005115013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7873578 + ... + 7894506.

It is an arithmetic number, because the mean of its divisors is an integer number (10444488600).

Almost surely, 2^165005115018 is an apocalyptic number.

165005115018 is an abundant number, since it is smaller than the sum of its proper divisors (169218520182).

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

165005115018 is a wasteful number, since it uses less digits than its factorization.

165005115018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37646.

The product of its (nonzero) digits is 6000, while the sum is 33.

Adding to 165005115018 its reverse (810511500561), we get a palindrome (975516615579).

The spelling of 165005115018 in words is "one hundred sixty-five billion, five million, one hundred fifteen thousand, eighteen".