13305011663 has 4 divisors (see below), whose sum is σ = 13333502520. Its totient is φ = 13276520808.

The previous prime is 13305011647. The next prime is 13305011717. The reversal of 13305011663 is 36611050331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13305011663 - 2⁴ = 13305011647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13305011063) 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, 14244728 + ... + 14245661.

It is an arithmetic number, because the mean of its divisors is an integer number (3333375630).

Almost surely, 2^13305011663 is an apocalyptic number.

13305011663 is a deficient number, since it is larger than the sum of its proper divisors (28490857).

13305011663 is an equidigital number, since it uses as much as digits as its factorization.

13305011663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28490856.

The product of its (nonzero) digits is 4860, while the sum is 29.

Adding to 13305011663 its reverse (36611050331), we get a palindrome (49916061994).

The spelling of 13305011663 in words is "thirteen billion, three hundred five million, eleven thousand, six hundred sixty-three".