51207755705 has 16 divisors (see below), whose sum is σ = 62466675984. Its totient is φ = 40288174080.

The previous prime is 51207755671. The next prime is 51207755723. The reversal of 51207755705 is 50755770215.

It can be written as a sum of positive squares in 8 ways, for example, as 15654013456 + 35553742249 = 125116^2 + 188557^2 .

It is not a de Polignac number, because 51207755705 - 2¹⁶ = 51207690169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2997869 + ... + 3014901.

It is an arithmetic number, because the mean of its divisors is an integer number (3904167249).

Almost surely, 2^51207755705 is an apocalyptic number.

It is an amenable number.

51207755705 is a deficient number, since it is larger than the sum of its proper divisors (11258920279).

51207755705 is a wasteful number, since it uses less digits than its factorization.

51207755705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26956.

The product of its (nonzero) digits is 428750, while the sum is 44.

The spelling of 51207755705 in words is "fifty-one billion, two hundred seven million, seven hundred fifty-five thousand, seven hundred five".