2066440044660 has 24 divisors (see below), whose sum is σ = 5786032125216. Its totient is φ = 551050678560.

The previous prime is 2066440044619. The next prime is 2066440044671. The reversal of 2066440044660 is 664400446602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17220333646 + ... + 17220333765.

It is an arithmetic number, because the mean of its divisors is an integer number (241084671884).

Almost surely, 2^{2066440044660} is an apocalyptic number.

2066440044660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2066440044660 is an abundant number, since it is smaller than the sum of its proper divisors (3719592080556).

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

2066440044660 is a wasteful number, since it uses less digits than its factorization.

2066440044660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34440667423 (or 34440667421 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 2066440044660 in words is "two trillion, sixty-six billion, four hundred forty million, forty-four thousand, six hundred sixty".