12517806782 has 8 divisors (see below), whose sum is σ = 20221072536. Its totient is φ = 5777449272.

The previous prime is 12517806773. The next prime is 12517806793. The reversal of 12517806782 is 28760871521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 240727028 + ... + 240727079.

It is an arithmetic number, because the mean of its divisors is an integer number (2527634067).

Almost surely, 2^12517806782 is an apocalyptic number.

12517806782 is a deficient number, since it is larger than the sum of its proper divisors (7703265754).

12517806782 is a wasteful number, since it uses less digits than its factorization.

12517806782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481454122.

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 12517806782 in words is "twelve billion, five hundred seventeen million, eight hundred six thousand, seven hundred eighty-two".