204455311514321 has 16 divisors (see below), whose sum is σ = 241903740378624. Its totient is φ = 169169169752064.

The previous prime is 204455311514299. The next prime is 204455311514323. The reversal of 204455311514321 is 123415113554402.

It is a cyclic number.

It is not a de Polignac number, because 204455311514321 - 2³⁰ = 204454237772497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204455311514323) 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, 4256446640 + ... + 4256494673.

It is an arithmetic number, because the mean of its divisors is an integer number (15118983773664).

Almost surely, 2^{204455311514321} is an apocalyptic number.

It is an amenable number.

204455311514321 is a deficient number, since it is larger than the sum of its proper divisors (37448428864303).

204455311514321 is an equidigital number, since it uses as much as digits as its factorization.

204455311514321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8512941440.

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 204455311514321 in words is "two hundred four trillion, four hundred fifty-five billion, three hundred eleven million, five hundred fourteen thousand, three hundred twenty-one".