204105423045 has 32 divisors (see below), whose sum is σ = 336095493120. Its totient is φ = 105692912640.

The previous prime is 204105422987. The next prime is 204105423077. The reversal of 204105423045 is 540324501402.

It is not a de Polignac number, because 204105423045 - 2⁶ = 204105422981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118036 + ... + 649725.

It is an arithmetic number, because the mean of its divisors is an integer number (10502984160).

Almost surely, 2^204105423045 is an apocalyptic number.

It is an amenable number.

204105423045 is a deficient number, since it is larger than the sum of its proper divisors (131990070075).

204105423045 is a wasteful number, since it uses less digits than its factorization.

204105423045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768285.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 204105423045 its reverse (540324501402), we get a palindrome (744429924447).

The spelling of 204105423045 in words is "two hundred four billion, one hundred five million, four hundred twenty-three thousand, forty-five".