36239781593 has 2 divisors, whose sum is σ = 36239781594. Its totient is φ = 36239781592.

The previous prime is 36239781587. The next prime is 36239781661. The reversal of 36239781593 is 39518793263.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18506065369 + 17733716224 = 136037^2 + 133168^2 .

It is a cyclic number.

It is not a de Polignac number, because 36239781593 - 2²⁶ = 36172672729 is a prime.

It is not a weakly prime, because it can be changed into another prime (36239781533) 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, 18119890796 + 18119890797.

It is an arithmetic number, because the mean of its divisors is an integer number (18119890797).

Almost surely, 2^36239781593 is an apocalyptic number.

It is an amenable number.

36239781593 is a deficient number, since it is larger than the sum of its proper divisors (1).

36239781593 is an equidigital number, since it uses as much as digits as its factorization.

36239781593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 56.

The spelling of 36239781593 in words is "thirty-six billion, two hundred thirty-nine million, seven hundred eighty-one thousand, five hundred ninety-three".