204015566204145 has 64 divisors (see below), whose sum is σ = 366797821501440. Its totient is φ = 107583105740544.

The previous prime is 204015566204129. The next prime is 204015566204183. The reversal of 204015566204145 is 541402665510402.

204015566204145 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 1 + 5 + 5 + 6 + 620 + 4 + 14 + 5 = 666.

204015566204145 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204015566204145 - 2⁴ = 204015566204129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 204015566204145.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15282694 + ... + 25329663.

It is an arithmetic number, because the mean of its divisors is an integer number (5731215960960).

Almost surely, 2^{204015566204145} is an apocalyptic number.

It is an amenable number.

204015566204145 is a deficient number, since it is larger than the sum of its proper divisors (162782255297295).

204015566204145 is a wasteful number, since it uses less digits than its factorization.

204015566204145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40612791 (or 40612785 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 204015566204145 in words is "two hundred four trillion, fifteen billion, five hundred sixty-six million, two hundred four thousand, one hundred forty-five".