12685400717 has 16 divisors (see below), whose sum is σ = 14172725952. Its totient is φ = 11254225920.

The previous prime is 12685400687. The next prime is 12685400759. The reversal of 12685400717 is 71700458621.

It is a cyclic number.

It is not a de Polignac number, because 12685400717 - 2¹² = 12685396621 is a prime.

It is a super-2 number, since 2×12685400717² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12685400317) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 564623 + ... + 586659.

It is an arithmetic number, because the mean of its divisors is an integer number (885795372).

Almost surely, 2^12685400717 is an apocalyptic number.

It is an amenable number.

12685400717 is a deficient number, since it is larger than the sum of its proper divisors (1487325235).

12685400717 is a wasteful number, since it uses less digits than its factorization.

12685400717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23308.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 12685400717 in words is "twelve billion, six hundred eighty-five million, four hundred thousand, seven hundred seventeen".