12526123409 has 8 divisors (see below), whose sum is σ = 12607056000. Its totient is φ = 12445261696.

The previous prime is 12526123391. The next prime is 12526123417. The reversal of 12526123409 is 90432162521.

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 12526123409 - 2²⁴ = 12509346193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12526123009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363092 + ... + 396090.

It is an arithmetic number, because the mean of its divisors is an integer number (1575882000).

Almost surely, 2^12526123409 is an apocalyptic number.

It is an amenable number.

12526123409 is a deficient number, since it is larger than the sum of its proper divisors (80932591).

12526123409 is a wasteful number, since it uses less digits than its factorization.

12526123409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35439.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 12526123409 in words is "twelve billion, five hundred twenty-six million, one hundred twenty-three thousand, four hundred nine".