18671672322017 has 64 divisors (see below), whose sum is σ = 23680319798016. Its totient is φ = 14458962984960.

The previous prime is 18671672321977. The next prime is 18671672322053. The reversal of 18671672322017 is 71022327617681.

It is not a de Polignac number, because 18671672322017 - 2¹⁰ = 18671672320993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18671672322017.

It is not an unprimeable number, because it can be changed into a prime (18671672382017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 196180313 + ... + 196275465.

It is an arithmetic number, because the mean of its divisors is an integer number (370004996844).

Almost surely, 2^{18671672322017} is an apocalyptic number.

18671672322017 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18671672322017 is a deficient number, since it is larger than the sum of its proper divisors (5008647475999).

18671672322017 is a wasteful number, since it uses less digits than its factorization.

18671672322017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96770.

The product of its (nonzero) digits is 2370816, while the sum is 53.

Adding to 18671672322017 its reverse (71022327617681), we get a palindrome (89693999939698).

The spelling of 18671672322017 in words is "eighteen trillion, six hundred seventy-one billion, six hundred seventy-two million, three hundred twenty-two thousand, seventeen".