11663016605 has 8 divisors (see below), whose sum is σ = 14373880152. Its totient is φ = 9078239808.

The previous prime is 11663016577. The next prime is 11663016619. The reversal of 11663016605 is 50661036611.

It can be written as a sum of positive squares in 4 ways, for example, as 628354489 + 11034662116 = 25067^2 + 105046^2 .

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 11663016605 - 2¹⁴ = 11663000221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31521482 + ... + 31521851.

It is an arithmetic number, because the mean of its divisors is an integer number (1796735019).

Almost surely, 2^11663016605 is an apocalyptic number.

It is an amenable number.

11663016605 is a deficient number, since it is larger than the sum of its proper divisors (2710863547).

11663016605 is an equidigital number, since it uses as much as digits as its factorization.

11663016605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63043375.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 11663016605 in words is "eleven billion, six hundred sixty-three million, sixteen thousand, six hundred five".