51512505730347 has 16 divisors (see below), whose sum is σ = 73981494908928. Its totient is φ = 31788923591040.

The previous prime is 51512505730321. The next prime is 51512505730391. The reversal of 51512505730347 is 74303750521515.

51512505730347 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 51512505730347 - 2³⁹ = 50962749916459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51512505730296 and 51512505730305.

It is not an unprimeable number, because it can be changed into a prime (51512505730447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12041256798 + ... + 12041261075.

It is an arithmetic number, because the mean of its divisors is an integer number (4623843431808).

Almost surely, 2^{51512505730347} is an apocalyptic number.

51512505730347 is a deficient number, since it is larger than the sum of its proper divisors (22468989178581).

51512505730347 is a wasteful number, since it uses less digits than its factorization.

51512505730347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24082517930.

The product of its (nonzero) digits is 2205000, while the sum is 48.

The spelling of 51512505730347 in words is "fifty-one trillion, five hundred twelve billion, five hundred five million, seven hundred thirty thousand, three hundred forty-seven".