13663053257 has 4 divisors (see below), whose sum is σ = 15614918016. Its totient is φ = 11711188500.

The previous prime is 13663053253. The next prime is 13663053329. The reversal of 13663053257 is 75235036631.

It is a happy number.

13663053257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75235036631 = 5827 ⋅12911453.

It is a cyclic number.

It is not a de Polignac number, because 13663053257 - 2² = 13663053253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13663053251) 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 in 3 ways as a sum of consecutive naturals, for example, 975932369 + ... + 975932382.

It is an arithmetic number, because the mean of its divisors is an integer number (3903729504).

Almost surely, 2^13663053257 is an apocalyptic number.

It is an amenable number.

13663053257 is a deficient number, since it is larger than the sum of its proper divisors (1951864759).

13663053257 is an equidigital number, since it uses as much as digits as its factorization.

13663053257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951864758.

The product of its (nonzero) digits is 340200, while the sum is 41.

Adding to 13663053257 its reverse (75235036631), we get a palindrome (88898089888).

The spelling of 13663053257 in words is "thirteen billion, six hundred sixty-three million, fifty-three thousand, two hundred fifty-seven".