66667847044 has 12 divisors (see below), whose sum is σ = 116674954704. Its totient is φ = 33332145704.

The previous prime is 66667847027. The next prime is 66667847101. The reversal of 66667847044 is 44074876666.

It is a self number, because there is not a number n which added to its sum of digits gives 66667847044.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 358222 + ... + 511525.

It is an arithmetic number, because the mean of its divisors is an integer number (9722912892).

Almost surely, 2^66667847044 is an apocalyptic number.

It is an amenable number.

66667847044 is a deficient number, since it is larger than the sum of its proper divisors (50007107660).

66667847044 is a wasteful number, since it uses less digits than its factorization.

66667847044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888914 (or 888912 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 58.

The spelling of 66667847044 in words is "sixty-six billion, six hundred sixty-seven million, eight hundred forty-seven thousand, forty-four".