204164034031321 has 32 divisors (see below), whose sum is σ = 254368080852480. Its totient is φ = 159556963055616.

The previous prime is 204164034031303. The next prime is 204164034031357. The reversal of 204164034031321 is 123130430461402.

It is not a de Polignac number, because 204164034031321 - 2³⁵ = 204129674292953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204164034035321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18227581 + ... + 27213466.

It is an arithmetic number, because the mean of its divisors is an integer number (7949002526640).

Almost surely, 2^{204164034031321} is an apocalyptic number.

It is an amenable number.

204164034031321 is a deficient number, since it is larger than the sum of its proper divisors (50204046821159).

204164034031321 is a wasteful number, since it uses less digits than its factorization.

204164034031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45441673.

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 204164034031321 its reverse (123130430461402), we get a palindrome (327294464492723).

The spelling of 204164034031321 in words is "two hundred four trillion, one hundred sixty-four billion, thirty-four million, thirty-one thousand, three hundred twenty-one".