20736531134593 has 2 divisors, whose sum is σ = 20736531134594. Its totient is φ = 20736531134592.

The previous prime is 20736531134521. The next prime is 20736531134647. The reversal of 20736531134593 is 39543113563702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18229970897649 + 2506560236944 = 4269657^2 + 1583212^2 .

It is a cyclic number.

It is not a de Polignac number, because 20736531134593 - 2⁴¹ = 18537507879041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20736531134593.

It is not a weakly prime, because it can be changed into another prime (20736531132593) 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, 10368265567296 + 10368265567297.

It is an arithmetic number, because the mean of its divisors is an integer number (10368265567297).

Almost surely, 2^{20736531134593} is an apocalyptic number.

It is an amenable number.

20736531134593 is a deficient number, since it is larger than the sum of its proper divisors (1).

20736531134593 is an equidigital number, since it uses as much as digits as its factorization.

20736531134593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6123600, while the sum is 52.

The spelling of 20736531134593 in words is "twenty trillion, seven hundred thirty-six billion, five hundred thirty-one million, one hundred thirty-four thousand, five hundred ninety-three".