2680064020646 has 8 divisors (see below), whose sum is σ = 4026718925760. Its totient is φ = 1337824378728.

The previous prime is 2680064020637. The next prime is 2680064020657. The reversal of 2680064020646 is 6460204600862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2680064020646² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2680064020597 and 2680064020606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103814281 + ... + 1103816708.

It is an arithmetic number, because the mean of its divisors is an integer number (503339865720).

Almost surely, 2^{2680064020646} is an apocalyptic number.

2680064020646 is a deficient number, since it is larger than the sum of its proper divisors (1346654905114).

2680064020646 is a wasteful number, since it uses less digits than its factorization.

2680064020646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207631598.

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 2680064020646 in words is "two trillion, six hundred eighty billion, sixty-four million, twenty thousand, six hundred forty-six".