20266342067 has 2 divisors, whose sum is σ = 20266342068. Its totient is φ = 20266342066.

The previous prime is 20266342051. The next prime is 20266342069. The reversal of 20266342067 is 76024366202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20266342067 - 2⁴ = 20266342051 is a prime.

Together with 20266342069, 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 20266342067.

It is not a weakly prime, because it can be changed into another prime (20266342069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10133171033 + 10133171034.

It is an arithmetic number, because the mean of its divisors is an integer number (10133171034).

Almost surely, 2^20266342067 is an apocalyptic number.

20266342067 is a deficient number, since it is larger than the sum of its proper divisors (1).

20266342067 is an equidigital number, since it uses as much as digits as its factorization.

20266342067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 38.

The spelling of 20266342067 in words is "twenty billion, two hundred sixty-six million, three hundred forty-two thousand, sixty-seven".