2066564311872 has 56 divisors (see below), whose sum is σ = 5510838230016. Its totient is φ = 683430709248.

The previous prime is 2066564311829. The next prime is 2066564311879. The reversal of 2066564311872 is 2781134656602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066564311879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42351033 + ... + 42399800.

It is an arithmetic number, because the mean of its divisors is an integer number (98407825536).

Almost surely, 2^{2066564311872} is an apocalyptic number.

It is an amenable number.

2066564311872 is an abundant number, since it is smaller than the sum of its proper divisors (3444273918144).

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

2066564311872 is a wasteful number, since it uses less digits than its factorization.

2066564311872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84750975 (or 84750965 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 2066564311872 in words is "two trillion, sixty-six billion, five hundred sixty-four million, three hundred eleven thousand, eight hundred seventy-two".