51611327705 has 16 divisors (see below), whose sum is σ = 72427327104. Its totient is φ = 34567585920.

The previous prime is 51611327681. The next prime is 51611327707. The reversal of 51611327705 is 50772311615.

It is not a de Polignac number, because 51611327705 - 2²² = 51607133401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51611327707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17145116 + ... + 17148125.

It is an arithmetic number, because the mean of its divisors is an integer number (4526707944).

Almost surely, 2^51611327705 is an apocalyptic number.

It is an amenable number.

51611327705 is a deficient number, since it is larger than the sum of its proper divisors (20815999399).

51611327705 is a wasteful number, since it uses less digits than its factorization.

51611327705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34293296.

The product of its (nonzero) digits is 44100, while the sum is 38.

The spelling of 51611327705 in words is "fifty-one billion, six hundred eleven million, three hundred twenty-seven thousand, seven hundred five".