321440434422432 has 96 divisors (see below), whose sum is σ = 909745228244160. Its totient is φ = 98789609318400.

The previous prime is 321440434422407. The next prime is 321440434422433. The reversal of 321440434422432 is 234224434044123.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (321440434422433) 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 15 ways as a sum of consecutive naturals, for example, 148849069 + ... + 150993132.

It is an arithmetic number, because the mean of its divisors is an integer number (9476512794210).

Almost surely, 2^{321440434422432} is an apocalyptic number.

321440434422432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

321440434422432 is an abundant number, since it is smaller than the sum of its proper divisors (588304793821728).

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

321440434422432 is a wasteful number, since it uses less digits than its factorization.

321440434422432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299843086 (or 299843078 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 42.

Adding to 321440434422432 its reverse (234224434044123), we get a palindrome (555664868466555).

The spelling of 321440434422432 in words is "three hundred twenty-one trillion, four hundred forty billion, four hundred thirty-four million, four hundred twenty-two thousand, four hundred thirty-two".