12008749523 has 4 divisors (see below), whose sum is σ = 12264254880. Its totient is φ = 11753244168.

The previous prime is 12008749517. The next prime is 12008749537. The reversal of 12008749523 is 32594780021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32594780021 = 2791 ⋅11678531.

It is a cyclic number.

It is not a de Polignac number, because 12008749523 - 2¹⁶ = 12008683987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12008749513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127752608 + ... + 127752701.

It is an arithmetic number, because the mean of its divisors is an integer number (3066063720).

Almost surely, 2^12008749523 is an apocalyptic number.

12008749523 is a deficient number, since it is larger than the sum of its proper divisors (255505357).

12008749523 is an equidigital number, since it uses as much as digits as its factorization.

12008749523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255505356.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 12008749523 in words is "twelve billion, eight million, seven hundred forty-nine thousand, five hundred twenty-three".