3804728173321 has 4 divisors (see below), whose sum is σ = 3858315894144. Its totient is φ = 3751140452500.

The previous prime is 3804728173303. The next prime is 3804728173369. The reversal of 3804728173321 is 1233718274083.

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 a de Polignac number, because none of the positive numbers 2^k-3804728173321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3804728173121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26793860305 + ... + 26793860446.

It is an arithmetic number, because the mean of its divisors is an integer number (964578973536).

Almost surely, 2^{3804728173321} is an apocalyptic number.

It is an amenable number.

3804728173321 is a deficient number, since it is larger than the sum of its proper divisors (53587720823).

3804728173321 is an equidigital number, since it uses as much as digits as its factorization.

3804728173321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53587720822.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 3804728173321 in words is "three trillion, eight hundred four billion, seven hundred twenty-eight million, one hundred seventy-three thousand, three hundred twenty-one".