11663641601 has 8 divisors (see below), whose sum is σ = 11863435584. Its totient is φ = 11464603920.

The previous prime is 11663641559. The next prime is 11663641667. The reversal of 11663641601 is 10614636611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11663641601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11663641001) 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, 157925 + ... + 219698.

It is an arithmetic number, because the mean of its divisors is an integer number (1482929448).

Almost surely, 2^11663641601 is an apocalyptic number.

It is an amenable number.

11663641601 is a deficient number, since it is larger than the sum of its proper divisors (199793983).

11663641601 is an equidigital number, since it uses as much as digits as its factorization.

11663641601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378151.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 11663641601 in words is "eleven billion, six hundred sixty-three million, six hundred forty-one thousand, six hundred one".