12717787512 has 32 divisors (see below), whose sum is σ = 31996990800. Its totient is φ = 4212259584.

The previous prime is 12717787501. The next prime is 12717787529. The reversal of 12717787512 is 21578771721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1683837 + ... + 1691372.

Almost surely, 2^12717787512 is an apocalyptic number.

12717787512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12717787512 is an abundant number, since it is smaller than the sum of its proper divisors (19279203288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12717787512 is a wasteful number, since it uses less digits than its factorization.

12717787512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375375 (or 3375371 counting only the distinct ones).

The product of its digits is 384160, while the sum is 48.

The spelling of 12717787512 in words is "twelve billion, seven hundred seventeen million, seven hundred eighty-seven thousand, five hundred twelve".