6600066621189 has 64 divisors (see below), whose sum is σ = 9686963404800. Its totient is φ = 3982171660992.

The previous prime is 6600066621097. The next prime is 6600066621217. The reversal of 6600066621189 is 9811266600066.

It is a happy number.

It is not a de Polignac number, because 6600066621189 - 2¹⁹ = 6600066096901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6600066621089) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 175426222 + ... + 175463840.

It is an arithmetic number, because the mean of its divisors is an integer number (151358803200).

Almost surely, 2^{6600066621189} is an apocalyptic number.

It is an amenable number.

6600066621189 is a deficient number, since it is larger than the sum of its proper divisors (3086896783611).

6600066621189 is a wasteful number, since it uses less digits than its factorization.

6600066621189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39254.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 6600066621189 in words is "six trillion, six hundred billion, sixty-six million, six hundred twenty-one thousand, one hundred eighty-nine".