6600066621202 has 4 divisors (see below), whose sum is σ = 9900099931806. Its totient is φ = 3300033310600.

The previous prime is 6600066621097. The next prime is 6600066621217. The reversal of 6600066621202 is 2021266600066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6473813608161 + 126253013041 = 2544369^2 + 355321^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1650016655299 + ... + 1650016655302.

Almost surely, 2^{6600066621202} is an apocalyptic number.

6600066621202 is a deficient number, since it is larger than the sum of its proper divisors (3300033310604).

6600066621202 is a wasteful number, since it uses less digits than its factorization.

6600066621202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300033310603.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 6600066621202 in words is "six trillion, six hundred billion, sixty-six million, six hundred twenty-one thousand, two hundred two".