66202640206882 has 8 divisors (see below), whose sum is σ = 105145369740396. Its totient is φ = 31154183626752.

The previous prime is 66202640206853. The next prime is 66202640206889. The reversal of 66202640206882 is 28860204620266.

It can be written as a sum of positive squares in 2 ways, for example, as 60128687724361 + 6073952482521 = 7754269^2 + 2464539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66202640206889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973568238303 + ... + 973568238370.

Almost surely, 2^{66202640206882} is an apocalyptic number.

66202640206882 is a deficient number, since it is larger than the sum of its proper divisors (38942729533514).

66202640206882 is a wasteful number, since it uses less digits than its factorization.

66202640206882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947136476692.

The product of its (nonzero) digits is 5308416, while the sum is 52.

The spelling of 66202640206882 in words is "sixty-six trillion, two hundred two billion, six hundred forty million, two hundred six thousand, eight hundred eighty-two".