12717787513 has 8 divisors (see below), whose sum is σ = 13161888000. Its totient is φ = 12274057488.

The previous prime is 12717787501. The next prime is 12717787529. The reversal of 12717787513 is 31578771721.

It is a happy number.

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 12717787513 - 2³³ = 4127852921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12717787553) 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, 21831 + ... + 160972.

It is an arithmetic number, because the mean of its divisors is an integer number (1645236000).

Almost surely, 2^12717787513 is an apocalyptic number.

It is an amenable number.

12717787513 is a deficient number, since it is larger than the sum of its proper divisors (444100487).

12717787513 is a wasteful number, since it uses less digits than its factorization.

12717787513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185231.

The product of its digits is 576240, while the sum is 49.

The spelling of 12717787513 in words is "twelve billion, seven hundred seventeen million, seven hundred eighty-seven thousand, five hundred thirteen".