12459510509 has 8 divisors (see below), whose sum is σ = 13116327840. Its totient is φ = 11802798576.

The previous prime is 12459510467. The next prime is 12459510563. The reversal of 12459510509 is 90501595421.

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 12459510509 - 2²⁸ = 12191075053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12459510809) 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, 367034 + ... + 399540.

It is an arithmetic number, because the mean of its divisors is an integer number (1639540980).

Almost surely, 2^12459510509 is an apocalyptic number.

12459510509 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12459510509 is a deficient number, since it is larger than the sum of its proper divisors (656817331).

12459510509 is a wasteful number, since it uses less digits than its factorization.

12459510509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52699.

The product of its (nonzero) digits is 81000, while the sum is 41.

The spelling of 12459510509 in words is "twelve billion, four hundred fifty-nine million, five hundred ten thousand, five hundred nine".