66042104469 has 16 divisors (see below), whose sum is σ = 96147915840. Its totient is φ = 39989404160.

The previous prime is 66042104467. The next prime is 66042104497. The reversal of 66042104469 is 96440124066.

It is a cyclic number.

It is not a de Polignac number, because 66042104469 - 2¹ = 66042104467 is a prime.

It is a super-2 number, since 2×66042104469² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66042104469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66042104467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 865692 + ... + 938885.

It is an arithmetic number, because the mean of its divisors is an integer number (6009244740).

Almost surely, 2^66042104469 is an apocalyptic number.

It is an amenable number.

66042104469 is a deficient number, since it is larger than the sum of its proper divisors (30105811371).

66042104469 is a wasteful number, since it uses less digits than its factorization.

66042104469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805700.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 66042104469 in words is "sixty-six billion, forty-two million, one hundred four thousand, four hundred sixty-nine".