12326205181780 has 96 divisors (see below), whose sum is σ = 30272834592000. Its totient is φ = 4127577108480.

The previous prime is 12326205181769. The next prime is 12326205181811. The reversal of 12326205181780 is 8718150262321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12326205181780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106791300 + ... + 106906660.

It is an arithmetic number, because the mean of its divisors is an integer number (315342027000).

Almost surely, 2^{12326205181780} is an apocalyptic number.

12326205181780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12326205181780 is an abundant number, since it is smaller than the sum of its proper divisors (17946629410220).

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

12326205181780 is a wasteful number, since it uses less digits than its factorization.

12326205181780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133169 (or 133167 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 12326205181780 in words is "twelve trillion, three hundred twenty-six billion, two hundred five million, one hundred eighty-one thousand, seven hundred eighty".