20722796089 has 2 divisors, whose sum is σ = 20722796090. Its totient is φ = 20722796088.

The previous prime is 20722796077. The next prime is 20722796093. The reversal of 20722796089 is 98069722702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20680740864 + 42055225 = 143808^2 + 6485^2 .

It is a cyclic number.

It is not a de Polignac number, because 20722796089 - 2³³ = 12132861497 is a prime.

It is not a weakly prime, because it can be changed into another prime (20722796989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10361398044 + 10361398045.

It is an arithmetic number, because the mean of its divisors is an integer number (10361398045).

Almost surely, 2^20722796089 is an apocalyptic number.

It is an amenable number.

20722796089 is a deficient number, since it is larger than the sum of its proper divisors (1).

20722796089 is an equidigital number, since it uses as much as digits as its factorization.

20722796089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 20722796089 in words is "twenty billion, seven hundred twenty-two million, seven hundred ninety-six thousand, eighty-nine".