321044673161 has 4 divisors (see below), whose sum is σ = 321046560324. Its totient is φ = 321042786000.

The previous prime is 321044673137. The next prime is 321044673163. The reversal of 321044673161 is 161376440123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71663290000 + 249381383161 = 267700^2 + 499381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321044673161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321044673163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659990 + ... + 1038111.

It is an arithmetic number, because the mean of its divisors is an integer number (80261640081).

Almost surely, 2^321044673161 is an apocalyptic number.

It is an amenable number.

321044673161 is a deficient number, since it is larger than the sum of its proper divisors (1887163).

321044673161 is a wasteful number, since it uses less digits than its factorization.

321044673161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887162.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 321044673161 in words is "three hundred twenty-one billion, forty-four million, six hundred seventy-three thousand, one hundred sixty-one".