66730766575722 has 16 divisors (see below), whose sum is σ = 133477035814080. Its totient is φ = 22241005081472.

The previous prime is 66730766575673. The next prime is 66730766575747. The reversal of 66730766575722 is 22757566703766.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645888318 + ... + 645991625.

It is an arithmetic number, because the mean of its divisors is an integer number (8342314738380).

Almost surely, 2^{66730766575722} is an apocalyptic number.

66730766575722 is an abundant number, since it is smaller than the sum of its proper divisors (66746269238358).

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

66730766575722 is a wasteful number, since it uses less digits than its factorization.

66730766575722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291888557.

The product of its (nonzero) digits is 933508800, while the sum is 69.

The spelling of 66730766575722 in words is "sixty-six trillion, seven hundred thirty billion, seven hundred sixty-six million, five hundred seventy-five thousand, seven hundred twenty-two".