18382709904479 has 16 divisors (see below), whose sum is σ = 18497229004800. Its totient is φ = 18268528694976.

The previous prime is 18382709904469. The next prime is 18382709904487. The reversal of 18382709904479 is 97440990728381.

It is a cyclic number.

It is not a de Polignac number, because 18382709904479 - 2¹² = 18382709900383 is a prime.

It is a super-2 number, since 2×18382709904479² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18382709904469) 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, 263105252 + ... + 263175110.

It is an arithmetic number, because the mean of its divisors is an integer number (1156076812800).

Almost surely, 2^{18382709904479} is an apocalyptic number.

18382709904479 is a deficient number, since it is larger than the sum of its proper divisors (114519100321).

18382709904479 is a wasteful number, since it uses less digits than its factorization.

18382709904479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72254.

The product of its (nonzero) digits is 219469824, while the sum is 71.

The spelling of 18382709904479 in words is "eighteen trillion, three hundred eighty-two billion, seven hundred nine million, nine hundred four thousand, four hundred seventy-nine".