13601220663 has 8 divisors (see below), whose sum is σ = 18166834800. Its totient is φ = 9051543488.

The previous prime is 13601220653. The next prime is 13601220697. The reversal of 13601220663 is 36602210631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13601220663 - 2⁶ = 13601220599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13601220663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13601220653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3982248 + ... + 3985661.

It is an arithmetic number, because the mean of its divisors is an integer number (2270854350).

Almost surely, 2^13601220663 is an apocalyptic number.

13601220663 is a deficient number, since it is larger than the sum of its proper divisors (4565614137).

13601220663 is an equidigital number, since it uses as much as digits as its factorization.

13601220663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7968481.

The product of its (nonzero) digits is 7776, while the sum is 30.

The spelling of 13601220663 in words is "thirteen billion, six hundred one million, two hundred twenty thousand, six hundred sixty-three".