66669879273 has 8 divisors (see below), whose sum is σ = 91295690688. Its totient is φ = 43245327024.

The previous prime is 66669879253. The next prime is 66669879313. The reversal of 66669879273 is 37297896666.

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

It is not a de Polignac number, because 66669879273 - 2⁹ = 66669878761 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66669879198 and 66669879207.

It is not an unprimeable number, because it can be changed into a prime (66669879253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300314661 + ... + 300314882.

It is an arithmetic number, because the mean of its divisors is an integer number (11411961336).

Almost surely, 2^66669879273 is an apocalyptic number.

It is an amenable number.

66669879273 is a deficient number, since it is larger than the sum of its proper divisors (24625811415).

66669879273 is a wasteful number, since it uses less digits than its factorization.

66669879273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600629583.

The product of its digits is 246903552, while the sum is 69.

The spelling of 66669879273 in words is "sixty-six billion, six hundred sixty-nine million, eight hundred seventy-nine thousand, two hundred seventy-three".