13656831547 has 2 divisors, whose sum is σ = 13656831548. Its totient is φ = 13656831546.

The previous prime is 13656831541. The next prime is 13656831553. The reversal of 13656831547 is 74513865631.

13656831547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (13656831541) and next prime (13656831553).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13656831547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13656831547.

It is not a weakly prime, because it can be changed into another prime (13656831541) 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, 6828415773 + 6828415774.

It is an arithmetic number, because the mean of its divisors is an integer number (6828415774).

Almost surely, 2^13656831547 is an apocalyptic number.

13656831547 is a deficient number, since it is larger than the sum of its proper divisors (1).

13656831547 is an equidigital number, since it uses as much as digits as its factorization.

13656831547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 49.

The spelling of 13656831547 in words is "thirteen billion, six hundred fifty-six million, eight hundred thirty-one thousand, five hundred forty-seven".