204451040124541 has 4 divisors (see below), whose sum is σ = 233658331570912. Its totient is φ = 175243748678172.

The previous prime is 204451040124481. The next prime is 204451040124607. The reversal of 204451040124541 is 145421040154402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204451040124541 - 2²³ = 204451031735933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204451040124541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204451040124941) 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, 14603645723175 + ... + 14603645723188.

It is an arithmetic number, because the mean of its divisors is an integer number (58414582892728).

Almost surely, 2^{204451040124541} is an apocalyptic number.

It is an amenable number.

204451040124541 is a deficient number, since it is larger than the sum of its proper divisors (29207291446371).

204451040124541 is an equidigital number, since it uses as much as digits as its factorization.

204451040124541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29207291446370.

The product of its (nonzero) digits is 102400, while the sum is 37.

Adding to 204451040124541 its reverse (145421040154402), we get a palindrome (349872080278943).

The spelling of 204451040124541 in words is "two hundred four trillion, four hundred fifty-one billion, forty million, one hundred twenty-four thousand, five hundred forty-one".