204471652439 has 2 divisors, whose sum is σ = 204471652440. Its totient is φ = 204471652438.

The previous prime is 204471652409. The next prime is 204471652447. The reversal of 204471652439 is 934256174402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204471652439 - 2¹² = 204471648343 is a prime.

It is a super-2 number, since 2×204471652439² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204471652393 and 204471652402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204471652409) 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, 102235826219 + 102235826220.

It is an arithmetic number, because the mean of its divisors is an integer number (102235826220).

Almost surely, 2^204471652439 is an apocalyptic number.

204471652439 is a deficient number, since it is larger than the sum of its proper divisors (1).

204471652439 is an equidigital number, since it uses as much as digits as its factorization.

204471652439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 204471652439 in words is "two hundred four billion, four hundred seventy-one million, six hundred fifty-two thousand, four hundred thirty-nine".