13595640749 has 2 divisors, whose sum is σ = 13595640750. Its totient is φ = 13595640748.

The previous prime is 13595640733. The next prime is 13595640769. The reversal of 13595640749 is 94704659531.

13595640749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6901455625 + 6694185124 = 83075^2 + 81818^2 .

It is a cyclic number.

It is not a de Polignac number, because 13595640749 - 2⁴ = 13595640733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13595640749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13595640769) 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, 6797820374 + 6797820375.

It is an arithmetic number, because the mean of its divisors is an integer number (6797820375).

Almost surely, 2^13595640749 is an apocalyptic number.

It is an amenable number.

13595640749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13595640749 is an equidigital number, since it uses as much as digits as its factorization.

13595640749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 13595640749 in words is "thirteen billion, five hundred ninety-five million, six hundred forty thousand, seven hundred forty-nine".