11923666279 has 32 divisors (see below), whose sum is σ = 14527641600. Its totient is φ = 9565776000.

The previous prime is 11923666273. The next prime is 11923666333. The reversal of 11923666279 is 97266632911.

It is a happy number.

It is not a de Polignac number, because 11923666279 - 2⁵ = 11923666247 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 (11923666273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1951329 + ... + 1957429.

It is an arithmetic number, because the mean of its divisors is an integer number (453988800).

Almost surely, 2^11923666279 is an apocalyptic number.

11923666279 is a deficient number, since it is larger than the sum of its proper divisors (2603975321).

11923666279 is a wasteful number, since it uses less digits than its factorization.

11923666279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6391.

The product of its digits is 1469664, while the sum is 52.

The spelling of 11923666279 in words is "eleven billion, nine hundred twenty-three million, six hundred sixty-six thousand, two hundred seventy-nine".