18782835787668 has 24 divisors (see below), whose sum is σ = 43826692197568. Its totient is φ = 6260934496896.

The previous prime is 18782835787627. The next prime is 18782835787669. The reversal of 18782835787668 is 86678753828781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18782835787669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9279705 + ... + 11121087.

Almost surely, 2^{18782835787668} is an apocalyptic number.

It is an amenable number.

18782835787668 is an abundant number, since it is smaller than the sum of its proper divisors (25043856409900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18782835787668 is a wasteful number, since it uses less digits than its factorization.

18782835787668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691423 (or 2691421 counting only the distinct ones).

The product of its digits is 12138577920, while the sum is 84.

The spelling of 18782835787668 in words is "eighteen trillion, seven hundred eighty-two billion, eight hundred thirty-five million, seven hundred eighty-seven thousand, six hundred sixty-eight".