11972799727911 has 24 divisors (see below), whose sum is σ = 18876217585680. Its totient is φ = 7252400832000.

The previous prime is 11972799727787. The next prime is 11972799727981.

11972799727911 is a `hidden beast` number, since 1 + 197 + 2 + 79 + 97 + 279 + 11 = 666.

11972799727911 is nontrivially palindromic in base 10.

11972799727911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11972799727911 - 2¹¹ = 11972799725863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11972799727911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11972799727981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31823940 + ... + 32197961.

It is an arithmetic number, because the mean of its divisors is an integer number (786509066070).

Almost surely, 2^{11972799727911} is an apocalyptic number.

11972799727911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11972799727911 is a deficient number, since it is larger than the sum of its proper divisors (6903417857769).

11972799727911 is a wasteful number, since it uses less digits than its factorization.

11972799727911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64023807 (or 64023804 counting only the distinct ones).

The product of its digits is 63011844, while the sum is 72.

The spelling of 11972799727911 in words is "eleven trillion, nine hundred seventy-two billion, seven hundred ninety-nine million, seven hundred twenty-seven thousand, nine hundred eleven".