321440432212044 has 18 divisors (see below), whose sum is σ = 812529981424980. Its totient is φ = 107146810737336.

The previous prime is 321440432212019. The next prime is 321440432212057. The reversal of 321440432212044 is 440212234044123.

321440432212044 is a `hidden beast` number, since 3 + 2 + 1 + 4 + 4 + 0 + 432 + 212 + 0 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 8928900894779 = 321440432212044 / (3 + 2 + 1 + 4 + 4 + 0 + 4 + 3 + 2 + 2 + 1 + 2 + 0 + 4 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4464450447354 + ... + 4464450447425.

It is an arithmetic number, because the mean of its divisors is an integer number (45140554523610).

Almost surely, 2^{321440432212044} is an apocalyptic number.

It is an amenable number.

321440432212044 is an abundant number, since it is smaller than the sum of its proper divisors (491089549212936).

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

321440432212044 is a wasteful number, since it uses less digits than its factorization.

321440432212044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8928900894789 (or 8928900894784 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

Adding to 321440432212044 its reverse (440212234044123), we get a palindrome (761652666256167).

The spelling of 321440432212044 in words is "three hundred twenty-one trillion, four hundred forty billion, four hundred thirty-two million, two hundred twelve thousand, forty-four".