20798589011513 has 2 divisors, whose sum is σ = 20798589011514. Its totient is φ = 20798589011512.

The previous prime is 20798589011441. The next prime is 20798589011567. The reversal of 20798589011513 is 31511098589702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15750357443584 + 5048231567929 = 3968672^2 + 2246827^2 .

It is a cyclic number.

It is not a de Polignac number, because 20798589011513 - 2⁸ = 20798589011257 is a prime.

It is not a weakly prime, because it can be changed into another prime (20798583011513) 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, 10399294505756 + 10399294505757.

It is an arithmetic number, because the mean of its divisors is an integer number (10399294505757).

Almost surely, 2^{20798589011513} is an apocalyptic number.

It is an amenable number.

20798589011513 is a deficient number, since it is larger than the sum of its proper divisors (1).

20798589011513 is an equidigital number, since it uses as much as digits as its factorization.

20798589011513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 59.

The spelling of 20798589011513 in words is "twenty trillion, seven hundred ninety-eight billion, five hundred eighty-nine million, eleven thousand, five hundred thirteen".