20430412049 has 2 divisors, whose sum is σ = 20430412050. Its totient is φ = 20430412048.

The previous prime is 20430411983. The next prime is 20430412073. The reversal of 20430412049 is 94021403402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20372423824 + 57988225 = 142732^2 + 7615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20430412049 is a prime.

It is not a weakly prime, because it can be changed into another prime (20430412349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215206024 + 10215206025.

It is an arithmetic number, because the mean of its divisors is an integer number (10215206025).

Almost surely, 2^20430412049 is an apocalyptic number.

It is an amenable number.

20430412049 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430412049 is an equidigital number, since it uses as much as digits as its factorization.

20430412049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 20430412049 in words is "twenty billion, four hundred thirty million, four hundred twelve thousand, forty-nine".