51828636785725 has 6 divisors (see below), whose sum is σ = 64267509614330. Its totient is φ = 41462909428560.

The previous prime is 51828636785719. The next prime is 51828636785749. The reversal of 51828636785725 is 52758763682815.

It can be written as a sum of positive squares in 3 ways, for example, as 8557947607609 + 43270689178116 = 2925397^2 + 6578046^2 .

It is not a de Polignac number, because 51828636785725 - 2⁹ = 51828636785213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1036572735690 + ... + 1036572735739.

Almost surely, 2^{51828636785725} is an apocalyptic number.

It is an amenable number.

51828636785725 is a deficient number, since it is larger than the sum of its proper divisors (12438872828605).

51828636785725 is a wasteful number, since it uses less digits than its factorization.

51828636785725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073145471439 (or 2073145471434 counting only the distinct ones).

The product of its digits is 1354752000, while the sum is 73.

The spelling of 51828636785725 in words is "fifty-one trillion, eight hundred twenty-eight billion, six hundred thirty-six million, seven hundred eighty-five thousand, seven hundred twenty-five".