51666119999 has 8 divisors (see below), whose sum is σ = 55650944832. Its totient is φ = 47682796320.

The previous prime is 51666119971. The next prime is 51666120059. The reversal of 51666119999 is 99991166615.

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 51666119999 - 2¹⁶ = 51666054463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51666119969) 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, 303287 + ... + 441944.

It is an arithmetic number, because the mean of its divisors is an integer number (6956368104).

Almost surely, 2^51666119999 is an apocalyptic number.

51666119999 is a deficient number, since it is larger than the sum of its proper divisors (3984824833).

51666119999 is a wasteful number, since it uses less digits than its factorization.

51666119999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750577.

The product of its digits is 7085880, while the sum is 62.

The spelling of 51666119999 in words is "fifty-one billion, six hundred sixty-six million, one hundred nineteen thousand, nine hundred ninety-nine".