20676579841 has 2 divisors, whose sum is σ = 20676579842. Its totient is φ = 20676579840.

The previous prime is 20676579811. The next prime is 20676579863. The reversal of 20676579841 is 14897567602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17247306241 + 3429273600 = 131329^2 + 58560^2 .

It is a cyclic number.

It is not a de Polignac number, because 20676579841 - 2⁵ = 20676579809 is a prime.

It is not a weakly prime, because it can be changed into another prime (20676579811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10338289920 + 10338289921.

It is an arithmetic number, because the mean of its divisors is an integer number (10338289921).

Almost surely, 2^20676579841 is an apocalyptic number.

It is an amenable number.

20676579841 is a deficient number, since it is larger than the sum of its proper divisors (1).

20676579841 is an equidigital number, since it uses as much as digits as its factorization.

20676579841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 20676579841 in words is "twenty billion, six hundred seventy-six million, five hundred seventy-nine thousand, eight hundred forty-one".