1323724666880 has 432 divisors, whose sum is σ = 4061325766680. Its totient is φ = 412570583040.

The previous prime is 1323724666861. The next prime is 1323724666907. The reversal of 1323724666880 is 886664273231.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60702059 + ... + 60723861.

Almost surely, 2^{1323724666880} is an apocalyptic number.

1323724666880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323724666880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2030662883340).

1323724666880 is an abundant number, since it is smaller than the sum of its proper divisors (2737601099800).

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

1323724666880 is a wasteful number, since it uses less digits than its factorization.

1323724666880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21866 (or 21828 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 56.

The spelling of 1323724666880 in words is "one trillion, three hundred twenty-three billion, seven hundred twenty-four million, six hundred sixty-six thousand, eight hundred eighty".