323740385280 has 960 divisors, whose sum is σ = 1263914937600. Its totient is φ = 79116632064.

The previous prime is 323740385263. The next prime is 323740385329. The reversal of 323740385280 is 82583047323.

323740385280 is a `hidden beast` number, since 3 + 23 + 74 + 0 + 38 + 528 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a super-2 number, since 2×323740385280² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2329067451 + ... + 2329067589.

It is an arithmetic number, because the mean of its divisors is an integer number (1316578060).

Almost surely, 2^323740385280 is an apocalyptic number.

323740385280 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 323740385280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631957468800).

323740385280 is an abundant number, since it is smaller than the sum of its proper divisors (940174552320).

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

323740385280 is an frugal number, since it uses more digits than its factorization.

323740385280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 323740385280 in words is "three hundred twenty-three billion, seven hundred forty million, three hundred eighty-five thousand, two hundred eighty".