321161203452444 has 24 divisors (see below), whose sum is σ = 750390182196480. Its totient is φ = 106908871511664.

The previous prime is 321161203452443. The next prime is 321161203452503. The reversal of 321161203452444 is 444254302161123.

It is a junction number, because it is equal to n+sod(n) for n = 321161203452396 and 321161203452405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321161203452443) 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 7 ways as a sum of consecutive naturals, for example, 18107862324 + ... + 18107880059.

It is an arithmetic number, because the mean of its divisors is an integer number (31266257591520).

Almost surely, 2^{321161203452444} is an apocalyptic number.

It is an amenable number.

321161203452444 is an abundant number, since it is smaller than the sum of its proper divisors (429228978744036).

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

321161203452444 is a wasteful number, since it uses less digits than its factorization.

321161203452444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36215743129 (or 36215743127 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 321161203452444 in words is "three hundred twenty-one trillion, one hundred sixty-one billion, two hundred three million, four hundred fifty-two thousand, four hundred forty-four".