323885621661 has 16 divisors (see below), whose sum is σ = 493562908800. Its totient is φ = 185068905408.

The previous prime is 323885621641. The next prime is 323885621701. The reversal of 323885621661 is 166126588323.

It is not a de Polignac number, because 323885621661 - 2⁵ = 323885621629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323885621611) 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, 119895 + ... + 813723.

It is an arithmetic number, because the mean of its divisors is an integer number (30847681800).

Almost surely, 2^323885621661 is an apocalyptic number.

It is an amenable number.

323885621661 is a deficient number, since it is larger than the sum of its proper divisors (169677287139).

323885621661 is a wasteful number, since it uses less digits than its factorization.

323885621661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716068.

The product of its digits is 2488320, while the sum is 51.

The spelling of 323885621661 in words is "three hundred twenty-three billion, eight hundred eighty-five million, six hundred twenty-one thousand, six hundred sixty-one".