12641701685 has 8 divisors (see below), whose sum is σ = 15248644440. Its totient is φ = 10060959744.

The previous prime is 12641701679. The next prime is 12641701691. The reversal of 12641701685 is 58610714621.

It is an interprime number because it is at equal distance from previous prime (12641701679) and next prime (12641701691).

It can be written as a sum of positive squares in 4 ways, for example, as 312264241 + 12329437444 = 17671^2 + 111038^2 .

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 12641701685 - 2¹⁰ = 12641700661 is a prime.

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, 6549140 + ... + 6551069.

It is an arithmetic number, because the mean of its divisors is an integer number (1906080555).

Almost surely, 2^12641701685 is an apocalyptic number.

It is an amenable number.

12641701685 is a deficient number, since it is larger than the sum of its proper divisors (2606942755).

12641701685 is a wasteful number, since it uses less digits than its factorization.

12641701685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13100407.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 12641701685 in words is "twelve billion, six hundred forty-one million, seven hundred one thousand, six hundred eighty-five".