18665364484471 has 8 divisors (see below), whose sum is σ = 18804897529200. Its totient is φ = 18525879114048.

The previous prime is 18665364484469. The next prime is 18665364484477. The reversal of 18665364484471 is 17448446356681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18665364484471 - 2¹ = 18665364484469 is a prime.

It is a super-3 number, since 3×18665364484471³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18665364484397 and 18665364484406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18665364484477) 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, 11132421 + ... + 12698878.

It is an arithmetic number, because the mean of its divisors is an integer number (2350612191150).

Almost surely, 2^{18665364484471} is an apocalyptic number.

18665364484471 is a deficient number, since it is larger than the sum of its proper divisors (139533044729).

18665364484471 is a wasteful number, since it uses less digits than its factorization.

18665364484471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23837153.

The product of its digits is 371589120, while the sum is 67.

The spelling of 18665364484471 in words is "eighteen trillion, six hundred sixty-five billion, three hundred sixty-four million, four hundred eighty-four thousand, four hundred seventy-one".