11665010611 has 4 divisors (see below), whose sum is σ = 11732438592. Its totient is φ = 11597582632.

The previous prime is 11665010597. The next prime is 11665010627. The reversal of 11665010611 is 11601056611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11601056611 = 547 ⋅21208513.

It is a cyclic number.

It is not a de Polignac number, because 11665010611 - 2¹⁷ = 11664879539 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 11665010611.

It is not an unprimeable number, because it can be changed into a prime (11665010681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33713731 + ... + 33714076.

It is an arithmetic number, because the mean of its divisors is an integer number (2933109648).

Almost surely, 2^11665010611 is an apocalyptic number.

11665010611 is a deficient number, since it is larger than the sum of its proper divisors (67427981).

11665010611 is an equidigital number, since it uses as much as digits as its factorization.

11665010611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67427980.

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 11665010611 in words is "eleven billion, six hundred sixty-five million, ten thousand, six hundred eleven".