204490020479 has 2 divisors, whose sum is σ = 204490020480. Its totient is φ = 204490020478.

The previous prime is 204490020467. The next prime is 204490020491. The reversal of 204490020479 is 974020094402.

It is a balanced prime because it is at equal distance from previous prime (204490020467) and next prime (204490020491).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204490020479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204490020979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102245010239 + 102245010240.

It is an arithmetic number, because the mean of its divisors is an integer number (102245010240).

Almost surely, 2^204490020479 is an apocalyptic number.

204490020479 is a deficient number, since it is larger than the sum of its proper divisors (1).

204490020479 is an equidigital number, since it uses as much as digits as its factorization.

204490020479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 204490020479 in words is "two hundred four billion, four hundred ninety million, twenty thousand, four hundred seventy-nine".