2666840482406 has 16 divisors (see below), whose sum is σ = 4012180215264. Its totient is φ = 1329448184064.

The previous prime is 2666840482381. The next prime is 2666840482417. The reversal of 2666840482406 is 6042840486662.

It is a super-2 number, since 2×2666840482406² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 4610351 + ... + 5156453.

It is an arithmetic number, because the mean of its divisors is an integer number (250761263454).

Almost surely, 2^{2666840482406} is an apocalyptic number.

2666840482406 is a deficient number, since it is larger than the sum of its proper divisors (1345339732858).

2666840482406 is a wasteful number, since it uses less digits than its factorization.

2666840482406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553375.

The product of its (nonzero) digits is 21233664, while the sum is 56.

The spelling of 2666840482406 in words is "two trillion, six hundred sixty-six billion, eight hundred forty million, four hundred eighty-two thousand, four hundred six".