51766680066 has 8 divisors (see below), whose sum is σ = 103533360144. Its totient is φ = 17255560020.

The previous prime is 51766680047. The next prime is 51766680167. The reversal of 51766680066 is 66008666715.

It is a happy number.

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

51766680066 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4313890000 + ... + 4313890011.

It is an arithmetic number, because the mean of its divisors is an integer number (12941670018).

Almost surely, 2^51766680066 is an apocalyptic number.

51766680066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51766680066 is a wasteful number, since it uses less digits than its factorization.

51766680066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8627780016.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 51766680066 in words is "fifty-one billion, seven hundred sixty-six million, six hundred eighty thousand, sixty-six".