6666739490469 has 8 divisors (see below), whose sum is σ = 8888999594752. Its totient is φ = 4444486189920.

The previous prime is 6666739490443. The next prime is 6666739490503. The reversal of 6666739490469 is 9640949376666.

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

It is not a de Polignac number, because 6666739490469 - 2¹² = 6666739486373 is a prime.

It is a super-2 number, since 2×6666739490469² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6666739490469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666739490419) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1385484 + ... + 3905514.

It is an arithmetic number, because the mean of its divisors is an integer number (1111124949344).

Almost surely, 2^{6666739490469} is an apocalyptic number.

It is an amenable number.

6666739490469 is a deficient number, since it is larger than the sum of its proper divisors (2222260104283).

6666739490469 is a wasteful number, since it uses less digits than its factorization.

6666739490469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401867.

The product of its (nonzero) digits is 1904684544, while the sum is 75.

The spelling of 6666739490469 in words is "six trillion, six hundred sixty-six billion, seven hundred thirty-nine million, four hundred ninety thousand, four hundred sixty-nine".