13863578257 has 2 divisors, whose sum is σ = 13863578258. Its totient is φ = 13863578256.

The previous prime is 13863578227. The next prime is 13863578269. The reversal of 13863578257 is 75287536831.

13863578257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12828733696 + 1034844561 = 113264^2 + 32169^2 .

It is a cyclic number.

It is not a de Polignac number, because 13863578257 - 2¹⁵ = 13863545489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13863578198 and 13863578207.

It is not a weakly prime, because it can be changed into another prime (13863578227) 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, 6931789128 + 6931789129.

It is an arithmetic number, because the mean of its divisors is an integer number (6931789129).

Almost surely, 2^13863578257 is an apocalyptic number.

It is an amenable number.

13863578257 is a deficient number, since it is larger than the sum of its proper divisors (1).

13863578257 is an equidigital number, since it uses as much as digits as its factorization.

13863578257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8467200, while the sum is 55.

The spelling of 13863578257 in words is "thirteen billion, eight hundred sixty-three million, five hundred seventy-eight thousand, two hundred fifty-seven".