11969341971 has 4 divisors (see below), whose sum is σ = 15959122632. Its totient is φ = 7979561312.

The previous prime is 11969341931. The next prime is 11969341987. The reversal of 11969341971 is 17914396911.

11969341971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11969341971 - 2⁶ = 11969341907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11969341931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1994890326 + ... + 1994890331.

It is an arithmetic number, because the mean of its divisors is an integer number (3989780658).

Almost surely, 2^11969341971 is an apocalyptic number.

11969341971 is a deficient number, since it is larger than the sum of its proper divisors (3989780661).

11969341971 is an equidigital number, since it uses as much as digits as its factorization.

11969341971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989780660.

The product of its digits is 367416, while the sum is 51.

The spelling of 11969341971 in words is "eleven billion, nine hundred sixty-nine million, three hundred forty-one thousand, nine hundred seventy-one".