204026068639 has 2 divisors, whose sum is σ = 204026068640. Its totient is φ = 204026068638.

The previous prime is 204026068607. The next prime is 204026068643. The reversal of 204026068639 is 936860620402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204026068639 - 2⁵ = 204026068607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204026068339) 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, 102013034319 + 102013034320.

It is an arithmetic number, because the mean of its divisors is an integer number (102013034320).

Almost surely, 2^204026068639 is an apocalyptic number.

204026068639 is a deficient number, since it is larger than the sum of its proper divisors (1).

204026068639 is an equidigital number, since it uses as much as digits as its factorization.

204026068639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 204026068639 in words is "two hundred four billion, twenty-six million, sixty-eight thousand, six hundred thirty-nine".