2686882400646 has 32 divisors (see below), whose sum is σ = 5441290041600. Its totient is φ = 884420056800.

The previous prime is 2686882400639. The next prime is 2686882400663. The reversal of 2686882400646 is 6460042886862.

It is a happy number.

2686882400646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2686882400646² (a number of 26 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 2686882400646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5619666 + ... + 6079013.

It is an arithmetic number, because the mean of its divisors is an integer number (170040313800).

Almost surely, 2^{2686882400646} is an apocalyptic number.

2686882400646 is an abundant number, since it is smaller than the sum of its proper divisors (2754407640954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2686882400646 is a wasteful number, since it uses less digits than its factorization.

2686882400646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11699164.

The product of its (nonzero) digits is 42467328, while the sum is 60.

The spelling of 2686882400646 in words is "two trillion, six hundred eighty-six billion, eight hundred eighty-two million, four hundred thousand, six hundred forty-six".