11776919321 has 4 divisors (see below), whose sum is σ = 12396757200. Its totient is φ = 11157081444.

The previous prime is 11776919317. The next prime is 11776919347. The reversal of 11776919321 is 12391967711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12391967711 = 6359 ⋅1948729.

It is a cyclic number.

It is not a de Polignac number, because 11776919321 - 2² = 11776919317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11776919351) 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, 309918911 + ... + 309918948.

It is an arithmetic number, because the mean of its divisors is an integer number (3099189300).

Almost surely, 2^11776919321 is an apocalyptic number.

It is an amenable number.

11776919321 is a deficient number, since it is larger than the sum of its proper divisors (619837879).

11776919321 is an equidigital number, since it uses as much as digits as its factorization.

11776919321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619837878.

The product of its digits is 142884, while the sum is 47.

The spelling of 11776919321 in words is "eleven billion, seven hundred seventy-six million, nine hundred nineteen thousand, three hundred twenty-one".