324720691680 has 1152 divisors, whose sum is σ = 1367324098560. Its totient is φ = 63228211200.

The previous prime is 324720691667. The next prime is 324720691681. The reversal of 324720691680 is 86196027423.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324720691681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 981029115 + ... + 981029445.

It is an arithmetic number, because the mean of its divisors is an integer number (1186913280).

Almost surely, 2^324720691680 is an apocalyptic number.

324720691680 is a gapful number since it is divisible by the number (30) 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 324720691680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683662049280).

324720691680 is an abundant number, since it is smaller than the sum of its proper divisors (1042603406880).

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

324720691680 is a wasteful number, since it uses less digits than its factorization.

324720691680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 324720691680 in words is "three hundred twenty-four billion, seven hundred twenty million, six hundred ninety-one thousand, six hundred eighty".