204043402402039 has 2 divisors, whose sum is σ = 204043402402040. Its totient is φ = 204043402402038.

The previous prime is 204043402402001. The next prime is 204043402402079. The reversal of 204043402402039 is 930204204340402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204043402402039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204043402401989 and 204043402402007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204043402402079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102021701201019 + 102021701201020.

It is an arithmetic number, because the mean of its divisors is an integer number (102021701201020).

Almost surely, 2^{204043402402039} is an apocalyptic number.

204043402402039 is a deficient number, since it is larger than the sum of its proper divisors (1).

204043402402039 is an equidigital number, since it uses as much as digits as its factorization.

204043402402039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 37.

The spelling of 204043402402039 in words is "two hundred four trillion, forty-three billion, four hundred two million, four hundred two thousand, thirty-nine".