6666727901229 has 24 divisors (see below), whose sum is σ = 10563834996000. Its totient is φ = 4017868844640.

The previous prime is 6666727901227. The next prime is 6666727901233. The reversal of 6666727901229 is 9221097276666.

It is not a de Polignac number, because 6666727901229 - 2¹ = 6666727901227 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666727901227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188084754 + ... + 188120195.

It is an arithmetic number, because the mean of its divisors is an integer number (440159791500).

Almost surely, 2^{6666727901229} is an apocalyptic number.

It is an amenable number.

6666727901229 is a deficient number, since it is larger than the sum of its proper divisors (3897107094771).

6666727901229 is a wasteful number, since it uses less digits than its factorization.

6666727901229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376205145 (or 376205142 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 63.

The spelling of 6666727901229 in words is "six trillion, six hundred sixty-six billion, seven hundred twenty-seven million, nine hundred one thousand, two hundred twenty-nine".