12685206767698 has 64 divisors (see below), whose sum is σ = 21447263669760. Its totient is φ = 5599746459648.

The previous prime is 12685206767657. The next prime is 12685206767699. The reversal of 12685206767698 is 89676760258621.

It is a super-2 number, since 2×12685206767698² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12685206767698.

It is not an unprimeable number, because it can be changed into a prime (12685206767699) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2360358 + ... + 5562526.

It is an arithmetic number, because the mean of its divisors is an integer number (335113494840).

Almost surely, 2^{12685206767698} is an apocalyptic number.

12685206767698 is a deficient number, since it is larger than the sum of its proper divisors (8762056902062).

12685206767698 is a wasteful number, since it uses less digits than its factorization.

12685206767698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202339.

The product of its (nonzero) digits is 731566080, while the sum is 73.

The spelling of 12685206767698 in words is "twelve trillion, six hundred eighty-five billion, two hundred six million, seven hundred sixty-seven thousand, six hundred ninety-eight".