11543994879 has 8 divisors (see below), whose sum is σ = 15544389552. Its totient is φ = 7619798400.

The previous prime is 11543994853. The next prime is 11543994899. The reversal of 11543994879 is 97849934511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11543994879 - 2⁹ = 11543994367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543994899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19049194 + ... + 19049799.

It is an arithmetic number, because the mean of its divisors is an integer number (1943048694).

Almost surely, 2^11543994879 is an apocalyptic number.

11543994879 is a deficient number, since it is larger than the sum of its proper divisors (4000394673).

11543994879 is a wasteful number, since it uses less digits than its factorization.

11543994879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38099097.

The product of its digits is 9797760, while the sum is 60.

The spelling of 11543994879 in words is "eleven billion, five hundred forty-three million, nine hundred ninety-four thousand, eight hundred seventy-nine".