321823993860 has 384 divisors, whose sum is σ = 1085341286400. Its totient is φ = 78891563520.

The previous prime is 321823993849. The next prime is 321823993889. The reversal of 321823993860 is 68399328123.

It is a happy number.

321823993860 is a `hidden beast` number, since 3 + 21 + 8 + 239 + 9 + 386 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 321823993797 and 321823993806.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 175763145 + ... + 175764975.

It is an arithmetic number, because the mean of its divisors is an integer number (2826409600).

Almost surely, 2^321823993860 is an apocalyptic number.

321823993860 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 321823993860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542670643200).

321823993860 is an abundant number, since it is smaller than the sum of its proper divisors (763517292540).

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

321823993860 is a wasteful number, since it uses less digits than its factorization.

321823993860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368 (or 2360 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 321823993860 in words is "three hundred twenty-one billion, eight hundred twenty-three million, nine hundred ninety-three thousand, eight hundred sixty".