204453505440123 has 16 divisors (see below), whose sum is σ = 277753304848896. Its totient is φ = 133728116801760.

The previous prime is 204453505440109. The next prime is 204453505440143. The reversal of 204453505440123 is 321044505354402.

It is not a de Polignac number, because 204453505440123 - 2⁵ = 204453505440091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204453505440143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3285715 + ... + 20486652.

It is an arithmetic number, because the mean of its divisors is an integer number (17359581553056).

Almost surely, 2^{204453505440123} is an apocalyptic number.

204453505440123 is a deficient number, since it is larger than the sum of its proper divisors (73299799408773).

204453505440123 is a wasteful number, since it uses less digits than its factorization.

204453505440123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23826514.

The product of its (nonzero) digits is 1152000, while the sum is 42.

The spelling of 204453505440123 in words is "two hundred four trillion, four hundred fifty-three billion, five hundred five million, four hundred forty thousand, one hundred twenty-three".