51086781223705 has 32 divisors (see below), whose sum is σ = 67149627315840. Its totient is φ = 37138353208320.

The previous prime is 51086781223669. The next prime is 51086781223711. The reversal of 51086781223705 is 50732218768015.

It is a happy number.

51086781223705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51086781223705 - 2¹¹ = 51086781221657 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204003982 + ... + 204254248.

It is an arithmetic number, because the mean of its divisors is an integer number (2098425853620).

Almost surely, 2^{51086781223705} is an apocalyptic number.

It is an amenable number.

51086781223705 is a deficient number, since it is larger than the sum of its proper divisors (16062846092135).

51086781223705 is a wasteful number, since it uses less digits than its factorization.

51086781223705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333129.

The product of its (nonzero) digits is 5644800, while the sum is 55.

The spelling of 51086781223705 in words is "fifty-one trillion, eighty-six billion, seven hundred eighty-one million, two hundred twenty-three thousand, seven hundred five".