20969867059 has 2 divisors, whose sum is σ = 20969867060. Its totient is φ = 20969867058.

The previous prime is 20969867029. The next prime is 20969867131. The reversal of 20969867059 is 95076896902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20969867059 - 2²⁹ = 20432996147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20969866988 and 20969867006.

It is not a weakly prime, because it can be changed into another prime (20969867029) 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, 10484933529 + 10484933530.

It is an arithmetic number, because the mean of its divisors is an integer number (10484933530).

Almost surely, 2^20969867059 is an apocalyptic number.

20969867059 is a deficient number, since it is larger than the sum of its proper divisors (1).

20969867059 is an equidigital number, since it uses as much as digits as its factorization.

20969867059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 20969867059 in words is "twenty billion, nine hundred sixty-nine million, eight hundred sixty-seven thousand, fifty-nine".