2686684840345 has 24 divisors (see below), whose sum is σ = 3630192700680. Its totient is φ = 1906295212800.

The previous prime is 2686684840337. The next prime is 2686684840423. The reversal of 2686684840345 is 5430484866862.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 156711473424 + 2529973366921 = 395868^2 + 1590589^2 .

It is not a de Polignac number, because 2686684840345 - 2³ = 2686684840337 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 54131310 + ... + 54180919.

It is an arithmetic number, because the mean of its divisors is an integer number (151258029195).

Almost surely, 2^{2686684840345} is an apocalyptic number.

It is an amenable number.

2686684840345 is a deficient number, since it is larger than the sum of its proper divisors (943507860335).

2686684840345 is a wasteful number, since it uses less digits than its factorization.

2686684840345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108312297 (or 108312286 counting only the distinct ones).

The product of its (nonzero) digits is 212336640, while the sum is 64.

The spelling of 2686684840345 in words is "two trillion, six hundred eighty-six billion, six hundred eighty-four million, eight hundred forty thousand, three hundred forty-five".