204425616543 has 4 divisors (see below), whose sum is σ = 272567488728. Its totient is φ = 136283744360.

The previous prime is 204425616529. The next prime is 204425616547. The reversal of 204425616543 is 345616524402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204425616543 - 2⁸ = 204425616287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204425616495 and 204425616504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204425616547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34070936088 + ... + 34070936093.

It is an arithmetic number, because the mean of its divisors is an integer number (68141872182).

Almost surely, 2^204425616543 is an apocalyptic number.

204425616543 is a deficient number, since it is larger than the sum of its proper divisors (68141872185).

204425616543 is an equidigital number, since it uses as much as digits as its factorization.

204425616543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68141872184.

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 204425616543 in words is "two hundred four billion, four hundred twenty-five million, six hundred sixteen thousand, five hundred forty-three".