20447792337593 has 2 divisors, whose sum is σ = 20447792337594. Its totient is φ = 20447792337592.

The previous prime is 20447792337551. The next prime is 20447792337611. The reversal of 20447792337593 is 39573329774402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16480652571769 + 3967139765824 = 4059637^2 + 1991768^2 .

It is a cyclic number.

It is not a de Polignac number, because 20447792337593 - 2²⁰ = 20447791289017 is a prime.

It is a super-2 number, since 2×20447792337593² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20447792337503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10223896168796 + 10223896168797.

It is an arithmetic number, because the mean of its divisors is an integer number (10223896168797).

Almost surely, 2^{20447792337593} is an apocalyptic number.

It is an amenable number.

20447792337593 is a deficient number, since it is larger than the sum of its proper divisors (1).

20447792337593 is an equidigital number, since it uses as much as digits as its factorization.

20447792337593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240045120, while the sum is 65.

The spelling of 20447792337593 in words is "twenty trillion, four hundred forty-seven billion, seven hundred ninety-two million, three hundred thirty-seven thousand, five hundred ninety-three".