11717063647 has 4 divisors (see below), whose sum is σ = 11724467040. Its totient is φ = 11709660256.

The previous prime is 11717063591. The next prime is 11717063717. The reversal of 11717063647 is 74636071711.

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 11717063647 - 2¹⁵ = 11717030879 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 (11717063447) 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, 3699322 + ... + 3702487.

It is an arithmetic number, because the mean of its divisors is an integer number (2931116760).

Almost surely, 2^11717063647 is an apocalyptic number.

11717063647 is a deficient number, since it is larger than the sum of its proper divisors (7403393).

11717063647 is an equidigital number, since it uses as much as digits as its factorization.

11717063647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7403392.

The product of its (nonzero) digits is 148176, while the sum is 43.

The spelling of 11717063647 in words is "eleven billion, seven hundred seventeen million, sixty-three thousand, six hundred forty-seven".