51768612849 has 8 divisors (see below), whose sum is σ = 71404983360. Its totient is φ = 33322325456.

The previous prime is 51768612839. The next prime is 51768612869. The reversal of 51768612849 is 94821686715.

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 51768612849 - 2⁸ = 51768612593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51768612839) 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, 297520677 + ... + 297520850.

It is an arithmetic number, because the mean of its divisors is an integer number (8925622920).

Almost surely, 2^51768612849 is an apocalyptic number.

It is an amenable number.

51768612849 is a deficient number, since it is larger than the sum of its proper divisors (19636370511).

51768612849 is a wasteful number, since it uses less digits than its factorization.

51768612849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595041559.

The product of its digits is 5806080, while the sum is 57.

The spelling of 51768612849 in words is "fifty-one billion, seven hundred sixty-eight million, six hundred twelve thousand, eight hundred forty-nine".