11959745523 has 8 divisors (see below), whose sum is σ = 17395993536. Its totient is φ = 7248330600.

The previous prime is 11959745489. The next prime is 11959745569. The reversal of 11959745523 is 32554795911.

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

It is not a de Polignac number, because 11959745523 - 2⁹ = 11959745011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11959745323) 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, 181208233 + ... + 181208298.

It is an arithmetic number, because the mean of its divisors is an integer number (2174499192).

Almost surely, 2^11959745523 is an apocalyptic number.

11959745523 is a deficient number, since it is larger than the sum of its proper divisors (5436248013).

11959745523 is a wasteful number, since it uses less digits than its factorization.

11959745523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362416545.

The product of its digits is 1701000, while the sum is 51.

The spelling of 11959745523 in words is "eleven billion, nine hundred fifty-nine million, seven hundred forty-five thousand, five hundred twenty-three".