11721522716 has 12 divisors (see below), whose sum is σ = 21174363840. Its totient is φ = 5671704480.

The previous prime is 11721522697. The next prime is 11721522727. The reversal of 11721522716 is 61722512711.

11721522716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 47264081 + ... + 47264328.

It is an arithmetic number, because the mean of its divisors is an integer number (1764530320).

Almost surely, 2^11721522716 is an apocalyptic number.

It is an amenable number.

11721522716 is a deficient number, since it is larger than the sum of its proper divisors (9452841124).

11721522716 is a wasteful number, since it uses less digits than its factorization.

11721522716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94528444 (or 94528442 counting only the distinct ones).

The product of its digits is 11760, while the sum is 35.

It can be divided in two parts, 117215 and 22716, that added together give a palindrome (139931).

The spelling of 11721522716 in words is "eleven billion, seven hundred twenty-one million, five hundred twenty-two thousand, seven hundred sixteen".