200721572066 has 8 divisors (see below), whose sum is σ = 318793085100. Its totient is φ = 94457210368.

The previous prime is 200721572057. The next prime is 200721572089. The reversal of 200721572066 is 660275127002.

It is a happy number.

200721572066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 196661206225 + 4060365841 = 443465^2 + 63721^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2951787791 + ... + 2951787858.

Almost surely, 2^200721572066 is an apocalyptic number.

200721572066 is a deficient number, since it is larger than the sum of its proper divisors (118071513034).

200721572066 is a wasteful number, since it uses less digits than its factorization.

200721572066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5903575668.

The product of its (nonzero) digits is 70560, while the sum is 38.

Adding to 200721572066 its reverse (660275127002), we get a palindrome (860996699068).

The spelling of 200721572066 in words is "two hundred billion, seven hundred twenty-one million, five hundred seventy-two thousand, sixty-six".