12456510317 has 16 divisors (see below), whose sum is σ = 13552261632. Its totient is φ = 11401401600.

The previous prime is 12456510293. The next prime is 12456510347. The reversal of 12456510317 is 71301565421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12456510317 - 2⁸ = 12456510061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12456510347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1898192 + ... + 1904742.

It is an arithmetic number, because the mean of its divisors is an integer number (847016352).

Almost surely, 2^12456510317 is an apocalyptic number.

12456510317 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12456510317 is a deficient number, since it is larger than the sum of its proper divisors (1095751315).

12456510317 is a wasteful number, since it uses less digits than its factorization.

12456510317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9628.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 12456510317 in words is "twelve billion, four hundred fifty-six million, five hundred ten thousand, three hundred seventeen".