13996727557 has 2 divisors, whose sum is σ = 13996727558. Its totient is φ = 13996727556.

The previous prime is 13996727551. The next prime is 13996727573. The reversal of 13996727557 is 75572769931.

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., 9856319841 + 4140407716 = 99279^2 + 64346^2 .

It is a cyclic number.

It is not a de Polignac number, because 13996727557 - 2¹⁹ = 13996203269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13996727495 and 13996727504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13996727551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6998363778 + 6998363779.

It is an arithmetic number, because the mean of its divisors is an integer number (6998363779).

Almost surely, 2^13996727557 is an apocalyptic number.

It is an amenable number.

13996727557 is a deficient number, since it is larger than the sum of its proper divisors (1).

13996727557 is an equidigital number, since it uses as much as digits as its factorization.

13996727557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25004700, while the sum is 61.

The spelling of 13996727557 in words is "thirteen billion, nine hundred ninety-six million, seven hundred twenty-seven thousand, five hundred fifty-seven".