204432445541 has 4 divisors (see below), whose sum is σ = 216457883532. Its totient is φ = 192407007552.

The previous prime is 204432445537. The next prime is 204432445561. The reversal of 204432445541 is 145544234402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 180005881441 + 24426564100 = 424271^2 + 156290^2 .

It is a cyclic number.

It is not a de Polignac number, because 204432445541 - 2² = 204432445537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204432445495 and 204432445504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204432445561) 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, 6012718970 + ... + 6012719003.

It is an arithmetic number, because the mean of its divisors is an integer number (54114470883).

Almost surely, 2^204432445541 is an apocalyptic number.

It is an amenable number.

204432445541 is a deficient number, since it is larger than the sum of its proper divisors (12025437991).

204432445541 is a wasteful number, since it uses less digits than its factorization.

204432445541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12025437990.

The product of its (nonzero) digits is 307200, while the sum is 38.

Adding to 204432445541 its reverse (145544234402), we get a palindrome (349976679943).

The spelling of 204432445541 in words is "two hundred four billion, four hundred thirty-two million, four hundred forty-five thousand, five hundred forty-one".