11961916712 has 8 divisors (see below), whose sum is σ = 22428593850. Its totient is φ = 5980958352.

The previous prime is 11961916691. The next prime is 11961916721. The reversal of 11961916712 is 21761916911.

11961916712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10956646276 + 1005270436 = 104674^2 + 31706^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 747619787 + ... + 747619802.

Almost surely, 2^11961916712 is an apocalyptic number.

It is an amenable number.

11961916712 is a deficient number, since it is larger than the sum of its proper divisors (10466677138).

11961916712 is a wasteful number, since it uses less digits than its factorization.

11961916712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495239595 (or 1495239591 counting only the distinct ones).

The product of its digits is 40824, while the sum is 44.

The spelling of 11961916712 in words is "eleven billion, nine hundred sixty-one million, nine hundred sixteen thousand, seven hundred twelve".