66827923043 has 8 divisors (see below), whose sum is σ = 78838471680. Its totient is φ = 55433300040.

The previous prime is 66827923039. The next prime is 66827923087. The reversal of 66827923043 is 34032972866.

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

It is a cyclic number.

It is not a de Polignac number, because 66827923043 - 2² = 66827923039 is a prime.

It is a super-2 number, since 2×66827923043² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66827922982 and 66827923000.

It is not an unprimeable number, because it can be changed into a prime (66827923343) 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, 153981173 + ... + 153981606.

It is an arithmetic number, because the mean of its divisors is an integer number (9854808960).

Almost surely, 2^66827923043 is an apocalyptic number.

66827923043 is a deficient number, since it is larger than the sum of its proper divisors (12010548637).

66827923043 is a wasteful number, since it uses less digits than its factorization.

66827923043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307962817.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 66827923043 in words is "sixty-six billion, eight hundred twenty-seven million, nine hundred twenty-three thousand, forty-three".