204013321015489 has 2 divisors, whose sum is σ = 204013321015490. Its totient is φ = 204013321015488.

The previous prime is 204013321015393. The next prime is 204013321015513. The reversal of 204013321015489 is 984510123310402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190787697758464 + 13225623257025 = 13812592^2 + 3636705^2 .

It is a cyclic number.

It is not a de Polignac number, because 204013321015489 - 2⁴⁵ = 168828948926657 is a prime.

It is not a weakly prime, because it can be changed into another prime (204013321015589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102006660507744 + 102006660507745.

It is an arithmetic number, because the mean of its divisors is an integer number (102006660507745).

Almost surely, 2^{204013321015489} is an apocalyptic number.

It is an amenable number.

204013321015489 is a deficient number, since it is larger than the sum of its proper divisors (1).

204013321015489 is an equidigital number, since it uses as much as digits as its factorization.

204013321015489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 204013321015489 in words is "two hundred four trillion, thirteen billion, three hundred twenty-one million, fifteen thousand, four hundred eighty-nine".