20410304309 has 2 divisors, whose sum is σ = 20410304310. Its totient is φ = 20410304308.

The previous prime is 20410304263. The next prime is 20410304347. The reversal of 20410304309 is 90340301402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14179570084 + 6230734225 = 119078^2 + 78935^2 .

It is a cyclic number.

It is not a de Polignac number, because 20410304309 - 2²⁰ = 20409255733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20410304009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10205152154 + 10205152155.

It is an arithmetic number, because the mean of its divisors is an integer number (10205152155).

Almost surely, 2^20410304309 is an apocalyptic number.

It is an amenable number.

20410304309 is a deficient number, since it is larger than the sum of its proper divisors (1).

20410304309 is an equidigital number, since it uses as much as digits as its factorization.

20410304309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 20410304309 in words is "twenty billion, four hundred ten million, three hundred four thousand, three hundred nine".