11953543679 has 12 divisors (see below), whose sum is σ = 15169247208. Its totient is φ = 9314449200.

The previous prime is 11953543643. The next prime is 11953543687. The reversal of 11953543679 is 97634535911.

It is not a de Polignac number, because 11953543679 - 2⁸ = 11953543423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11953543679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11953543619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11088092 + ... + 11089169.

It is an arithmetic number, because the mean of its divisors is an integer number (1264103934).

Almost surely, 2^11953543679 is an apocalyptic number.

11953543679 is a deficient number, since it is larger than the sum of its proper divisors (3215703529).

11953543679 is a wasteful number, since it uses less digits than its factorization.

11953543679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22177286 (or 22177279 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 53.

The spelling of 11953543679 in words is "eleven billion, nine hundred fifty-three million, five hundred forty-three thousand, six hundred seventy-nine".