16516500018 has 16 divisors (see below), whose sum is σ = 33735830400. Its totient is φ = 5388361616.

The previous prime is 16516500017. The next prime is 16516500037. The reversal of 16516500018 is 81000561561.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16516500017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29284293 + ... + 29284856.

It is an arithmetic number, because the mean of its divisors is an integer number (2108489400).

Almost surely, 2^16516500018 is an apocalyptic number.

16516500018 is an abundant number, since it is smaller than the sum of its proper divisors (17219330382).

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

16516500018 is a wasteful number, since it uses less digits than its factorization.

16516500018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58569201.

The product of its (nonzero) digits is 7200, while the sum is 33.

The spelling of 16516500018 in words is "sixteen billion, five hundred sixteen million, five hundred thousand, eighteen".