11661716705 has 8 divisors (see below), whose sum is σ = 13994640000. Its totient is φ = 9328986736.

The previous prime is 11661716699. The next prime is 11661716711. The reversal of 11661716705 is 50761716611.

It is an interprime number because it is at equal distance from previous prime (11661716699) and next prime (11661716711).

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 11661716705 - 2¹⁴ = 11661700321 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207416 + ... + 257574.

It is an arithmetic number, because the mean of its divisors is an integer number (1749330000).

Almost surely, 2^11661716705 is an apocalyptic number.

It is an amenable number.

11661716705 is a deficient number, since it is larger than the sum of its proper divisors (2332923295).

11661716705 is an equidigital number, since it uses as much as digits as its factorization.

11661716705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96663.

The product of its (nonzero) digits is 52920, while the sum is 41.

The spelling of 11661716705 in words is "eleven billion, six hundred sixty-one million, seven hundred sixteen thousand, seven hundred five".