3205827020321 has 4 divisors (see below), whose sum is σ = 3205845460272. Its totient is φ = 3205808580372.

The previous prime is 3205827020197. The next prime is 3205827020353. The reversal of 3205827020321 is 1230207285023.

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 3205827020321 - 2¹⁸ = 3205826758177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3205827070321) 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 3 ways as a sum of consecutive naturals, for example, 8956691 + ... + 9307736.

It is an arithmetic number, because the mean of its divisors is an integer number (801461365068).

Almost surely, 2^{3205827020321} is an apocalyptic number.

It is an amenable number.

3205827020321 is a deficient number, since it is larger than the sum of its proper divisors (18439951).

3205827020321 is a wasteful number, since it uses less digits than its factorization.

3205827020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18439950.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 3205827020321 in words is "three trillion, two hundred five billion, eight hundred twenty-seven million, twenty thousand, three hundred twenty-one".