11969867347 has 4 divisors (see below), whose sum is σ = 12043302280. Its totient is φ = 11896432416.

The previous prime is 11969867291. The next prime is 11969867383. The reversal of 11969867347 is 74376896911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11969867347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11969847347) 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 3 ways as a sum of consecutive naturals, for example, 36717222 + ... + 36717547.

It is an arithmetic number, because the mean of its divisors is an integer number (3010825570).

Almost surely, 2^11969867347 is an apocalyptic number.

11969867347 is a deficient number, since it is larger than the sum of its proper divisors (73434933).

11969867347 is an equidigital number, since it uses as much as digits as its factorization.

11969867347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73434932.

The product of its digits is 13716864, while the sum is 61.

The spelling of 11969867347 in words is "eleven billion, nine hundred sixty-nine million, eight hundred sixty-seven thousand, three hundred forty-seven".