11951333579872 has 24 divisors (see below), whose sum is σ = 23531147712072. Its totient is φ = 5975169081600.

The previous prime is 11951333579839. The next prime is 11951333579873. The reversal of 11951333579872 is 27897533315911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11951333579873) 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, 15163029 + ... + 15931732.

It is an arithmetic number, because the mean of its divisors is an integer number (980464488003).

Almost surely, 2^{11951333579872} is an apocalyptic number.

It is an amenable number.

11951333579872 is a deficient number, since it is larger than the sum of its proper divisors (11579814132200).

11951333579872 is a wasteful number, since it uses less digits than its factorization.

11951333579872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31106782 (or 31106774 counting only the distinct ones).

The product of its digits is 42865200, while the sum is 64.

The spelling of 11951333579872 in words is "eleven trillion, nine hundred fifty-one billion, three hundred thirty-three million, five hundred seventy-nine thousand, eight hundred seventy-two".