2066644279296 has 84 divisors (see below), whose sum is σ = 5969941510182. Its totient is φ = 688881401856.

The previous prime is 2066644279223. The next prime is 2066644279303. The reversal of 2066644279296 is 6929724466602.

It can be written as a sum of positive squares in only one way, i.e., 1204866256896 + 861778022400 = 1097664^2 + 928320^2 .

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13941601 + ... + 14089056.

Almost surely, 2^{2066644279296} is an apocalyptic number.

It is an amenable number.

2066644279296 is an abundant number, since it is smaller than the sum of its proper divisors (3903297230886).

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

2066644279296 is an equidigital number, since it uses as much as digits as its factorization.

2066644279296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28030689 (or 28030662 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 63.

The spelling of 2066644279296 in words is "two trillion, sixty-six billion, six hundred forty-four million, two hundred seventy-nine thousand, two hundred ninety-six".