204551144022321 has 16 divisors (see below), whose sum is σ = 303041037381120. Its totient is φ = 136366391874960.

The previous prime is 204551144022259. The next prime is 204551144022359. The reversal of 204551144022321 is 123220441155402.

204551144022321 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 5 + 1 + 14 + 402 + 232 + 1 = 666.

It is not a de Polignac number, because 204551144022321 - 2²⁹ = 204550607151409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204551144022221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25195770 + ... + 32309891.

It is an arithmetic number, because the mean of its divisors is an integer number (18940064836320).

Almost surely, 2^{204551144022321} is an apocalyptic number.

It is an amenable number.

204551144022321 is a deficient number, since it is larger than the sum of its proper divisors (98489893358799).

204551144022321 is a wasteful number, since it uses less digits than its factorization.

204551144022321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57637413 (or 57637407 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 204551144022321 its reverse (123220441155402), we get a palindrome (327771585177723).

The spelling of 204551144022321 in words is "two hundred four trillion, five hundred fifty-one billion, one hundred forty-four million, twenty-two thousand, three hundred twenty-one".