20321266807 has 2 divisors, whose sum is σ = 20321266808. Its totient is φ = 20321266806.

The previous prime is 20321266759. The next prime is 20321266879. The reversal of 20321266807 is 70866212302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20321266807 - 2¹¹ = 20321264759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20321266607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160633403 + 10160633404.

It is an arithmetic number, because the mean of its divisors is an integer number (10160633404).

Almost surely, 2^20321266807 is an apocalyptic number.

20321266807 is a deficient number, since it is larger than the sum of its proper divisors (1).

20321266807 is an equidigital number, since it uses as much as digits as its factorization.

20321266807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 20321266807 in words is "twenty billion, three hundred twenty-one million, two hundred sixty-six thousand, eight hundred seven".