11662209520823 has 4 divisors (see below), whose sum is σ = 11836272349560. Its totient is φ = 11488146692088.

The previous prime is 11662209520807. The next prime is 11662209520831. The reversal of 11662209520823 is 32802590226611.

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 11662209520823 - 2⁴ = 11662209520807 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 (11662209520883) 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, 87031414268 + ... + 87031414401.

It is an arithmetic number, because the mean of its divisors is an integer number (2959068087390).

Almost surely, 2^{11662209520823} is an apocalyptic number.

11662209520823 is a deficient number, since it is larger than the sum of its proper divisors (174062828737).

11662209520823 is an equidigital number, since it uses as much as digits as its factorization.

11662209520823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174062828736.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 11662209520823 in words is "eleven trillion, six hundred sixty-two billion, two hundred nine million, five hundred twenty thousand, eight hundred twenty-three".