20576566079 has 2 divisors, whose sum is σ = 20576566080. Its totient is φ = 20576566078.

The previous prime is 20576566039. The next prime is 20576566121. The reversal of 20576566079 is 97066567502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20576566079 - 2³² = 16281598783 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20576566079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20576566009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10288283039 + 10288283040.

It is an arithmetic number, because the mean of its divisors is an integer number (10288283040).

Almost surely, 2^20576566079 is an apocalyptic number.

20576566079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20576566079 is an equidigital number, since it uses as much as digits as its factorization.

20576566079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 20576566079 in words is "twenty billion, five hundred seventy-six million, five hundred sixty-six thousand, seventy-nine".