13504355663 has 4 divisors (see below), whose sum is σ = 13531419000. Its totient is φ = 13477292328.

The previous prime is 13504355651. The next prime is 13504355693. The reversal of 13504355663 is 36655340531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36655340531 = 19 ⋅1929228449.

It is a cyclic number.

It is not a de Polignac number, because 13504355663 - 2⁸ = 13504355407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13504355663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13504355633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13530920 + ... + 13531917.

It is an arithmetic number, because the mean of its divisors is an integer number (3382854750).

Almost surely, 2^13504355663 is an apocalyptic number.

13504355663 is a deficient number, since it is larger than the sum of its proper divisors (27063337).

13504355663 is an equidigital number, since it uses as much as digits as its factorization.

13504355663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27063336.

The product of its (nonzero) digits is 486000, while the sum is 41.

The spelling of 13504355663 in words is "thirteen billion, five hundred four million, three hundred fifty-five thousand, six hundred sixty-three".