20663030567 has 2 divisors, whose sum is σ = 20663030568. Its totient is φ = 20663030566.

The previous prime is 20663030551. The next prime is 20663030569. The reversal of 20663030567 is 76503036602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20663030567 - 2⁴ = 20663030551 is a prime.

Together with 20663030569, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20663030567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20663030569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10331515283 + 10331515284.

It is an arithmetic number, because the mean of its divisors is an integer number (10331515284).

Almost surely, 2^20663030567 is an apocalyptic number.

20663030567 is a deficient number, since it is larger than the sum of its proper divisors (1).

20663030567 is an equidigital number, since it uses as much as digits as its factorization.

20663030567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 38.

The spelling of 20663030567 in words is "twenty billion, six hundred sixty-three million, thirty thousand, five hundred sixty-seven".