18117016322 has 4 divisors (see below), whose sum is σ = 27175524486. Its totient is φ = 9058508160.

The previous prime is 18117016321. The next prime is 18117016429. The reversal of 18117016322 is 22361071181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22361071181 = 105943 ⋅211067.

It can be written as a sum of positive squares in only one way, i.e., 13000332361 + 5116683961 = 114019^2 + 71531^2 .

It is a super-2 number, since 2×18117016322² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18117016321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4529254079 + ... + 4529254082.

Almost surely, 2^18117016322 is an apocalyptic number.

18117016322 is a deficient number, since it is larger than the sum of its proper divisors (9058508164).

18117016322 is an equidigital number, since it uses as much as digits as its factorization.

18117016322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9058508163.

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 18117016322 in words is "eighteen billion, one hundred seventeen million, sixteen thousand, three hundred twenty-two".