18500350017 has 16 divisors (see below), whose sum is σ = 24800585600. Its totient is φ = 12266888832.

The previous prime is 18500350003. The next prime is 18500350019. The reversal of 18500350017 is 71005300581.

It is not a de Polignac number, because 18500350017 - 2¹² = 18500345921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18500350019) 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, 2310573 + ... + 2318565.

It is an arithmetic number, because the mean of its divisors is an integer number (1550036600).

Almost surely, 2^18500350017 is an apocalyptic number.

It is an amenable number.

18500350017 is a deficient number, since it is larger than the sum of its proper divisors (6300235583).

18500350017 is a wasteful number, since it uses less digits than its factorization.

18500350017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12072.

The product of its (nonzero) digits is 4200, while the sum is 30.

Adding to 18500350017 its reverse (71005300581), we get a palindrome (89505650598).

The spelling of 18500350017 in words is "eighteen billion, five hundred million, three hundred fifty thousand, seventeen".