66006864046468 has 12 divisors (see below), whose sum is σ = 115906251032460. Its totient is φ = 32890792322912.

The previous prime is 66006864046457. The next prime is 66006864046469. The reversal of 66006864046468 is 86464046860066.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60337598281984 + 5669265764484 = 7767728^2 + 2381022^2 .

It is a super-2 number, since 2×66006864046468² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66006864046469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28159923763 + ... + 28159926106.

It is an arithmetic number, because the mean of its divisors is an integer number (9658854252705).

Almost surely, 2^{66006864046468} is an apocalyptic number.

It is an amenable number.

66006864046468 is a deficient number, since it is larger than the sum of its proper divisors (49899386985992).

66006864046468 is a wasteful number, since it uses less digits than its factorization.

66006864046468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56319850166 (or 56319850164 counting only the distinct ones).

The product of its (nonzero) digits is 191102976, while the sum is 64.

The spelling of 66006864046468 in words is "sixty-six trillion, six billion, eight hundred sixty-four million, forty-six thousand, four hundred sixty-eight".