11815713523 has 8 divisors (see below), whose sum is σ = 12085508448. Its totient is φ = 11547654144.

The previous prime is 11815713499. The next prime is 11815713587. The reversal of 11815713523 is 32531751811.

11815713523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11815713523 - 2⁵ = 11815713491 is a prime.

It is a super-2 number, since 2×11815713523² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11815713323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420111 + ... + 447352.

It is an arithmetic number, because the mean of its divisors is an integer number (1510688556).

Almost surely, 2^11815713523 is an apocalyptic number.

11815713523 is a deficient number, since it is larger than the sum of its proper divisors (269794925).

11815713523 is an equidigital number, since it uses as much as digits as its factorization.

11815713523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867773.

The product of its digits is 25200, while the sum is 37.

The spelling of 11815713523 in words is "eleven billion, eight hundred fifteen million, seven hundred thirteen thousand, five hundred twenty-three".