20413525516673 has 2 divisors, whose sum is σ = 20413525516674. Its totient is φ = 20413525516672.

The previous prime is 20413525516621. The next prime is 20413525516679. The reversal of 20413525516673 is 37661552531402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14452862062864 + 5960663453809 = 3801692^2 + 2441447^2 .

It is a cyclic number.

It is not a de Polignac number, because 20413525516673 - 2⁶ = 20413525516609 is a prime.

It is not a weakly prime, because it can be changed into another prime (20413525516679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206762758336 + 10206762758337.

It is an arithmetic number, because the mean of its divisors is an integer number (10206762758337).

Almost surely, 2^{20413525516673} is an apocalyptic number.

It is an amenable number.

20413525516673 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413525516673 is an equidigital number, since it uses as much as digits as its factorization.

20413525516673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536000, while the sum is 50.

The spelling of 20413525516673 in words is "twenty trillion, four hundred thirteen billion, five hundred twenty-five million, five hundred sixteen thousand, six hundred seventy-three".