18765782328340 has 48 divisors (see below), whose sum is σ = 40583369836800. Its totient is φ = 7285681084032.

The previous prime is 18765782328301. The next prime is 18765782328367. The reversal of 18765782328340 is 4382328756781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100559979 + ... + 100746418.

It is an arithmetic number, because the mean of its divisors is an integer number (845486871600).

Almost surely, 2^{18765782328340} is an apocalyptic number.

18765782328340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18765782328340 is an abundant number, since it is smaller than the sum of its proper divisors (21817587508460).

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

18765782328340 is a wasteful number, since it uses less digits than its factorization.

18765782328340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201306544 (or 201306542 counting only the distinct ones).

The product of its (nonzero) digits is 108380160, while the sum is 64.

The spelling of 18765782328340 in words is "eighteen trillion, seven hundred sixty-five billion, seven hundred eighty-two million, three hundred twenty-eight thousand, three hundred forty".