204144499957 has 4 divisors (see below), whose sum is σ = 204605323200. Its totient is φ = 203683676716.

The previous prime is 204144499841. The next prime is 204144499969. The reversal of 204144499957 is 759994441402.

It is a happy number.

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 204144499957 - 2⁷ = 204144499829 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204144439957) 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, 230410957 + ... + 230411842.

It is an arithmetic number, because the mean of its divisors is an integer number (51151330800).

Almost surely, 2^204144499957 is an apocalyptic number.

It is an amenable number.

204144499957 is a deficient number, since it is larger than the sum of its proper divisors (460823243).

204144499957 is an equidigital number, since it uses as much as digits as its factorization.

204144499957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460823242.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 204144499957 in words is "two hundred four billion, one hundred forty-four million, four hundred ninety-nine thousand, nine hundred fifty-seven".