2536881389593 has 2 divisors, whose sum is σ = 2536881389594. Its totient is φ = 2536881389592.

The previous prime is 2536881389591. The next prime is 2536881389633. The reversal of 2536881389593 is 3959831886352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2489478084864 + 47403304729 = 1577808^2 + 217723^2 .

It is a cyclic number.

It is not a de Polignac number, because 2536881389593 - 2¹ = 2536881389591 is a prime.

It is a super-3 number, since 3×2536881389593³ (a number of 38 digits) contains 333 as substring.

Together with 2536881389591, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2536881389591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1268440694796 + 1268440694797.

It is an arithmetic number, because the mean of its divisors is an integer number (1268440694797).

Almost surely, 2^{2536881389593} is an apocalyptic number.

It is an amenable number.

2536881389593 is a deficient number, since it is larger than the sum of its proper divisors (1).

2536881389593 is an equidigital number, since it uses as much as digits as its factorization.

2536881389593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 335923200, while the sum is 70.

The spelling of 2536881389593 in words is "two trillion, five hundred thirty-six billion, eight hundred eighty-one million, three hundred eighty-nine thousand, five hundred ninety-three".