204542051200521 has 16 divisors (see below), whose sum is σ = 272851246617600. Its totient is φ = 136297114627968.

The previous prime is 204542051200519. The next prime is 204542051200583. The reversal of 204542051200521 is 125002150245402.

It is not a de Polignac number, because 204542051200521 - 2¹ = 204542051200519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204542051400521) 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, 289667275 + ... + 290372543.

It is an arithmetic number, because the mean of its divisors is an integer number (17053202913600).

Almost surely, 2^{204542051200521} is an apocalyptic number.

It is an amenable number.

204542051200521 is a deficient number, since it is larger than the sum of its proper divisors (68309195417079).

204542051200521 is a wasteful number, since it uses less digits than its factorization.

204542051200521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750688.

The product of its (nonzero) digits is 32000, while the sum is 33.

The spelling of 204542051200521 in words is "two hundred four trillion, five hundred forty-two billion, fifty-one million, two hundred thousand, five hundred twenty-one".