20300343409 has 2 divisors, whose sum is σ = 20300343410. Its totient is φ = 20300343408.

The previous prime is 20300343383. The next prime is 20300343491. The reversal of 20300343409 is 90434300302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18266333409 + 2034010000 = 135153^2 + 45100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20300343409 is a prime.

It is not a weakly prime, because it can be changed into another prime (20300343809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150171704 + 10150171705.

It is an arithmetic number, because the mean of its divisors is an integer number (10150171705).

Almost surely, 2^20300343409 is an apocalyptic number.

It is an amenable number.

20300343409 is a deficient number, since it is larger than the sum of its proper divisors (1).

20300343409 is an equidigital number, since it uses as much as digits as its factorization.

20300343409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

The spelling of 20300343409 in words is "twenty billion, three hundred million, three hundred forty-three thousand, four hundred nine".