204321223233949 has 2 divisors, whose sum is σ = 204321223233950. Its totient is φ = 204321223233948.

The previous prime is 204321223233931. The next prime is 204321223234123. The reversal of 204321223233949 is 949332322123402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188423116492900 + 15898106741049 = 13726730^2 + 3987243^2 .

It is a cyclic number.

It is not a de Polignac number, because 204321223233949 - 2⁴⁵ = 169136851145117 is a prime.

It is a super-2 number, since 2×204321223233949² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204321223231949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102160611616974 + 102160611616975.

It is an arithmetic number, because the mean of its divisors is an integer number (102160611616975).

Almost surely, 2^{204321223233949} is an apocalyptic number.

It is an amenable number.

204321223233949 is a deficient number, since it is larger than the sum of its proper divisors (1).

204321223233949 is an equidigital number, since it uses as much as digits as its factorization.

204321223233949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3359232, while the sum is 49.

The spelling of 204321223233949 in words is "two hundred four trillion, three hundred twenty-one billion, two hundred twenty-three million, two hundred thirty-three thousand, nine hundred forty-nine".