11665110651 has 8 divisors (see below), whose sum is σ = 15728239440. Its totient is φ = 7689361152.

The previous prime is 11665110637. The next prime is 11665110661. The reversal of 11665110651 is 15601156611.

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

It is a de Polignac number, because none of the positive numbers 2^k-11665110651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11665110661) 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, 21844510 + ... + 21845043.

It is an arithmetic number, because the mean of its divisors is an integer number (1966029930).

Almost surely, 2^11665110651 is an apocalyptic number.

11665110651 is a deficient number, since it is larger than the sum of its proper divisors (4063128789).

11665110651 is an equidigital number, since it uses as much as digits as its factorization.

11665110651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43689645.

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 11665110651 in words is "eleven billion, six hundred sixty-five million, one hundred ten thousand, six hundred fifty-one".