1195660665911 has 4 divisors (see below), whose sum is σ = 1195693816392. Its totient is φ = 1195627515432.

The previous prime is 1195660665887. The next prime is 1195660665949.

1195660665911 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1195660665911 - 2³⁸ = 920782758967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1195660665211) 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, 16521080 + ... + 16593293.

It is an arithmetic number, because the mean of its divisors is an integer number (298923454098).

Almost surely, 2^{1195660665911} is an apocalyptic number.

1195660665911 is a deficient number, since it is larger than the sum of its proper divisors (33150481).

1195660665911 is an equidigital number, since it uses as much as digits as its factorization.

1195660665911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33150480.

The product of its (nonzero) digits is 2624400, while the sum is 56.

The spelling of 1195660665911 in words is "one trillion, one hundred ninety-five billion, six hundred sixty million, six hundred sixty-five thousand, nine hundred eleven".