11688710691 has 8 divisors (see below), whose sum is σ = 17811368704. Its totient is φ = 6679263240.

The previous prime is 11688710651. The next prime is 11688710701. The reversal of 11688710691 is 19601788611.

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

It is not a de Polignac number, because 11688710691 - 2¹³ = 11688702499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11688710691.

It is not an unprimeable number, because it can be changed into a prime (11688710651) 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, 278302615 + ... + 278302656.

It is an arithmetic number, because the mean of its divisors is an integer number (2226421088).

Almost surely, 2^11688710691 is an apocalyptic number.

11688710691 is a deficient number, since it is larger than the sum of its proper divisors (6122658013).

11688710691 is an equidigital number, since it uses as much as digits as its factorization.

11688710691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556605281.

The product of its (nonzero) digits is 145152, while the sum is 48.

The spelling of 11688710691 in words is "eleven billion, six hundred eighty-eight million, seven hundred ten thousand, six hundred ninety-one".