321440433302412 has 36 divisors (see below), whose sum is σ = 817069257852120. Its totient is φ = 106548225561792.

The previous prime is 321440433302399. The next prime is 321440433302419. The reversal of 321440433302412 is 214203334044123.

321440433302412 is a `hidden beast` number, since 3 + 2 + 1 + 4 + 40 + 43 + 330 + 241 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (321440433302419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24941057593 + ... + 24941070480.

It is an arithmetic number, because the mean of its divisors is an integer number (22696368273670).

Almost surely, 2^{321440433302412} is an apocalyptic number.

It is an amenable number.

321440433302412 is an abundant number, since it is smaller than the sum of its proper divisors (495628824549708).

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

321440433302412 is a wasteful number, since it uses less digits than its factorization.

321440433302412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49882128262 (or 49882128257 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 321440433302412 its reverse (214203334044123), we get a palindrome (535643767346535).

The spelling of 321440433302412 in words is "three hundred twenty-one trillion, four hundred forty billion, four hundred thirty-three million, three hundred two thousand, four hundred twelve".