321674044561 has 4 divisors (see below), whose sum is σ = 321702216192. Its totient is φ = 321645872932.

The previous prime is 321674044541. The next prime is 321674044607. The reversal of 321674044561 is 165440476123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 321674044561 - 2⁹ = 321674044049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321674044541) 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, 14068681 + ... + 14091526.

It is an arithmetic number, because the mean of its divisors is an integer number (80425554048).

Almost surely, 2^321674044561 is an apocalyptic number.

It is an amenable number.

321674044561 is a deficient number, since it is larger than the sum of its proper divisors (28171631).

321674044561 is a wasteful number, since it uses less digits than its factorization.

321674044561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28171630.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 321674044561 in words is "three hundred twenty-one billion, six hundred seventy-four million, forty-four thousand, five hundred sixty-one".