12323785890 has 160 divisors (see below), whose sum is σ = 33772720320. Its totient is φ = 2870090496.

The previous prime is 12323785889. The next prime is 12323785907. The reversal of 12323785890 is 9858732321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 16279392 + ... + 16280148.

It is an arithmetic number, because the mean of its divisors is an integer number (211079502).

Almost surely, 2^12323785890 is an apocalyptic number.

12323785890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12323785890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16886360160).

12323785890 is an abundant number, since it is smaller than the sum of its proper divisors (21448934430).

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

12323785890 is an equidigital number, since it uses as much as digits as its factorization.

12323785890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 12323785890 in words is "twelve billion, three hundred twenty-three million, seven hundred eighty-five thousand, eight hundred ninety".