66543447334 has 16 divisors (see below), whose sum is σ = 122849441568. Its totient is φ = 26324880192.

The previous prime is 66543447283. The next prime is 66543447353. The reversal of 66543447334 is 43374434566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182811487 + ... + 182811850.

It is an arithmetic number, because the mean of its divisors is an integer number (7678090098).

Almost surely, 2^66543447334 is an apocalyptic number.

66543447334 is a deficient number, since it is larger than the sum of its proper divisors (56305994234).

66543447334 is a wasteful number, since it uses less digits than its factorization.

66543447334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365623359.

The product of its digits is 8709120, while the sum is 49.

The spelling of 66543447334 in words is "sixty-six billion, five hundred forty-three million, four hundred forty-seven thousand, three hundred thirty-four".