2021328009066 has 32 divisors (see below), whose sum is σ = 4119586024320. Its totient is φ = 660958369344.

The previous prime is 2021328009061. The next prime is 2021328009101. The reversal of 2021328009066 is 6609008231202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2021328009061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1516020 + ... + 2518128.

It is an arithmetic number, because the mean of its divisors is an integer number (128737063260).

Almost surely, 2^{2021328009066} is an apocalyptic number.

2021328009066 is an abundant number, since it is smaller than the sum of its proper divisors (2098258015254).

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

2021328009066 is a wasteful number, since it uses less digits than its factorization.

2021328009066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008510.

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 2021328009066 in words is "two trillion, twenty-one billion, three hundred twenty-eight million, nine thousand, sixty-six".