204421631541 has 8 divisors (see below), whose sum is σ = 286907553120. Its totient is φ = 129108398832.

The previous prime is 204421631537. The next prime is 204421631567. The reversal of 204421631541 is 145136124402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204421631541 - 2² = 204421631537 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204421638541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1793172150 + ... + 1793172263.

It is an arithmetic number, because the mean of its divisors is an integer number (35863444140).

Almost surely, 2^204421631541 is an apocalyptic number.

It is an amenable number.

204421631541 is a deficient number, since it is larger than the sum of its proper divisors (82485921579).

204421631541 is a wasteful number, since it uses less digits than its factorization.

204421631541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586344435.

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 204421631541 its reverse (145136124402), we get a palindrome (349557755943).

The spelling of 204421631541 in words is "two hundred four billion, four hundred twenty-one million, six hundred thirty-one thousand, five hundred forty-one".