11791744331 has 4 divisors (see below), whose sum is σ = 11792200200. Its totient is φ = 11791288464.

The previous prime is 11791744313. The next prime is 11791744421. The reversal of 11791744331 is 13344719711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13344719711 = 19 ⋅702353669.

It is a cyclic number.

It is not a de Polignac number, because 11791744331 - 2¹⁸ = 11791482187 is a prime.

It is a super-2 number, since 2×11791744331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11791744031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186641 + ... + 241698.

It is an arithmetic number, because the mean of its divisors is an integer number (2948050050).

Almost surely, 2^11791744331 is an apocalyptic number.

11791744331 is a deficient number, since it is larger than the sum of its proper divisors (455869).

11791744331 is an equidigital number, since it uses as much as digits as its factorization.

11791744331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455868.

The product of its digits is 63504, while the sum is 41.

The spelling of 11791744331 in words is "eleven billion, seven hundred ninety-one million, seven hundred forty-four thousand, three hundred thirty-one".