204504561319 has 2 divisors, whose sum is σ = 204504561320. Its totient is φ = 204504561318.

The previous prime is 204504561311. The next prime is 204504561353. The reversal of 204504561319 is 913165405402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204504561319 - 2³ = 204504561311 is a prime.

It is a super-2 number, since 2×204504561319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204504561311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102252280659 + 102252280660.

It is an arithmetic number, because the mean of its divisors is an integer number (102252280660).

Almost surely, 2^204504561319 is an apocalyptic number.

204504561319 is a deficient number, since it is larger than the sum of its proper divisors (1).

204504561319 is an equidigital number, since it uses as much as digits as its factorization.

204504561319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 204504561319 in words is "two hundred four billion, five hundred four million, five hundred sixty-one thousand, three hundred nineteen".