204414430651243 has 4 divisors (see below), whose sum is σ = 204414610786848. Its totient is φ = 204414250515640.

The previous prime is 204414430651147. The next prime is 204414430651253. The reversal of 204414430651243 is 342156034414402.

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

It is a cyclic number.

It is not a de Polignac number, because 204414430651243 - 2¹³ = 204414430643051 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 204414430651243.

It is not an unprimeable number, because it can be changed into a prime (204414430651253) 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, 88354771 + ... + 90638812.

It is an arithmetic number, because the mean of its divisors is an integer number (51103652696712).

Almost surely, 2^{204414430651243} is an apocalyptic number.

204414430651243 is a deficient number, since it is larger than the sum of its proper divisors (180135605).

204414430651243 is a wasteful number, since it uses less digits than its factorization.

204414430651243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180135604.

The product of its (nonzero) digits is 1105920, while the sum is 43.

The spelling of 204414430651243 in words is "two hundred four trillion, four hundred fourteen billion, four hundred thirty million, six hundred fifty-one thousand, two hundred forty-three".