11718908709 has 8 divisors (see below), whose sum is σ = 15635725440. Its totient is φ = 7807348896.

The previous prime is 11718908647. The next prime is 11718908737. The reversal of 11718908709 is 90780981711.

It is a happy number.

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

It is not a de Polignac number, because 11718908709 - 2¹⁵ = 11718875941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11718908609) 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, 1309024 + ... + 1317945.

It is an arithmetic number, because the mean of its divisors is an integer number (1954465680).

Almost surely, 2^11718908709 is an apocalyptic number.

It is an amenable number.

11718908709 is a deficient number, since it is larger than the sum of its proper divisors (3916816731).

11718908709 is a wasteful number, since it uses less digits than its factorization.

11718908709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628459.

The product of its (nonzero) digits is 254016, while the sum is 51.

The spelling of 11718908709 in words is "eleven billion, seven hundred eighteen million, nine hundred eight thousand, seven hundred nine".