20614395569 has 2 divisors, whose sum is σ = 20614395570. Its totient is φ = 20614395568.

The previous prime is 20614395523. The next prime is 20614395691. The reversal of 20614395569 is 96559341602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10959367969 + 9655027600 = 104687^2 + 98260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20614395569 is a prime.

It is a super-2 number, since 2×20614395569² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20614391569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10307197784 + 10307197785.

It is an arithmetic number, because the mean of its divisors is an integer number (10307197785).

Almost surely, 2^20614395569 is an apocalyptic number.

It is an amenable number.

20614395569 is a deficient number, since it is larger than the sum of its proper divisors (1).

20614395569 is an equidigital number, since it uses as much as digits as its factorization.

20614395569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The spelling of 20614395569 in words is "twenty billion, six hundred fourteen million, three hundred ninety-five thousand, five hundred sixty-nine".