11996544911 has 16 divisors (see below), whose sum is σ = 13005064800. Its totient is φ = 11000492928.

The previous prime is 11996544797. The next prime is 11996544913. The reversal of 11996544911 is 11944569911.

It is a cyclic number.

It is not a de Polignac number, because 11996544911 - 2²² = 11992350607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11996544911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11996544913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1385945 + ... + 1394573.

It is an arithmetic number, because the mean of its divisors is an integer number (812816550).

Almost surely, 2^11996544911 is an apocalyptic number.

11996544911 is a deficient number, since it is larger than the sum of its proper divisors (1008519889).

11996544911 is a wasteful number, since it uses less digits than its factorization.

11996544911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9338.

The product of its digits is 349920, while the sum is 50.

The spelling of 11996544911 in words is "eleven billion, nine hundred ninety-six million, five hundred forty-four thousand, nine hundred eleven".