11967988071 has 32 divisors (see below), whose sum is σ = 18106986240. Its totient is φ = 6970454784.

The previous prime is 11967988057. The next prime is 11967988091. The reversal of 11967988071 is 17088976911.

It is not a de Polignac number, because 11967988071 - 2⁶ = 11967988007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11967988051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 805516 + ... + 820238.

It is an arithmetic number, because the mean of its divisors is an integer number (565843320).

Almost surely, 2^11967988071 is an apocalyptic number.

11967988071 is a deficient number, since it is larger than the sum of its proper divisors (6138998169).

11967988071 is a wasteful number, since it uses less digits than its factorization.

11967988071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15855.

The product of its (nonzero) digits is 1524096, while the sum is 57.

The spelling of 11967988071 in words is "eleven billion, nine hundred sixty-seven million, nine hundred eighty-eight thousand, seventy-one".