11971812673 has 8 divisors (see below), whose sum is σ = 12180332736. Its totient is φ = 11765067600.

The previous prime is 11971812649. The next prime is 11971812679. The reversal of 11971812673 is 37621817911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11971812673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11971812679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430138 + ... + 457123.

It is an arithmetic number, because the mean of its divisors is an integer number (1522541592).

Almost surely, 2^11971812673 is an apocalyptic number.

It is an amenable number.

11971812673 is a deficient number, since it is larger than the sum of its proper divisors (208520063).

11971812673 is a wasteful number, since it uses less digits than its factorization.

11971812673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887495.

The product of its digits is 127008, while the sum is 46.

The spelling of 11971812673 in words is "eleven billion, nine hundred seventy-one million, eight hundred twelve thousand, six hundred seventy-three".