204434340139 has 2 divisors, whose sum is σ = 204434340140. Its totient is φ = 204434340138.

The previous prime is 204434340101. The next prime is 204434340161. The reversal of 204434340139 is 931043434402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204434340139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204434340098 and 204434340107.

It is not a weakly prime, because it can be changed into another prime (204434340239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102217170069 + 102217170070.

It is an arithmetic number, because the mean of its divisors is an integer number (102217170070).

Almost surely, 2^204434340139 is an apocalyptic number.

204434340139 is a deficient number, since it is larger than the sum of its proper divisors (1).

204434340139 is an equidigital number, since it uses as much as digits as its factorization.

204434340139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 204434340139 in words is "two hundred four billion, four hundred thirty-four million, three hundred forty thousand, one hundred thirty-nine".