51744644644716 has 36 divisors (see below), whose sum is σ = 130799732597352. Its totient is φ = 17248113376704.

The previous prime is 51744644644711. The next prime is 51744644644717. The reversal of 51744644644716 is 61744644644715.

It is a happy number.

51744644644716 is a `hidden beast` number, since 5 + 1 + 7 + 44 + 64 + 4 + 64 + 471 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (51744644644711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2102760 + ... + 10388016.

It is an arithmetic number, because the mean of its divisors is an integer number (3633325905482).

Almost surely, 2^{51744644644716} is an apocalyptic number.

It is an amenable number.

51744644644716 is an abundant number, since it is smaller than the sum of its proper divisors (79055087952636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51744644644716 is a wasteful number, since it uses less digits than its factorization.

51744644644716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8458750 (or 8458745 counting only the distinct ones).

The product of its digits is 216760320, while the sum is 63.

Subtracting 51744644644716 from its reverse (61744644644715), we obtain a palindrome (9999999999999).

The spelling of 51744644644716 in words is "fifty-one trillion, seven hundred forty-four billion, six hundred forty-four million, six hundred forty-four thousand, seven hundred sixteen".