204436421654145 has 16 divisors (see below), whose sum is σ = 331980338448960. Its totient is φ = 107405403614784.

The previous prime is 204436421654117. The next prime is 204436421654189. The reversal of 204436421654145 is 541456124634402.

It is not a de Polignac number, because 204436421654145 - 2⁴² = 200038375143041 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101709661510 + ... + 101709663519.

It is an arithmetic number, because the mean of its divisors is an integer number (20748771153060).

Almost surely, 2^{204436421654145} is an apocalyptic number.

It is an amenable number.

204436421654145 is a deficient number, since it is larger than the sum of its proper divisors (127543916794815).

204436421654145 is a wasteful number, since it uses less digits than its factorization.

204436421654145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203419325104.

The product of its (nonzero) digits is 11059200, while the sum is 51.

The spelling of 204436421654145 in words is "two hundred four trillion, four hundred thirty-six billion, four hundred twenty-one million, six hundred fifty-four thousand, one hundred forty-five".