51751765207651 has 16 divisors (see below), whose sum is σ = 55232627073120. Its totient is φ = 48319957670400.

The previous prime is 51751765207633. The next prime is 51751765207663. The reversal of 51751765207651 is 15670256715715.

It is a happy number.

51751765207651 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 51751765207651 - 2⁷ = 51751765207523 is a prime.

It is a super-2 number, since 2×51751765207651² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51751765237651) 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, 5342676 + ... + 11491201.

It is an arithmetic number, because the mean of its divisors is an integer number (3452039192070).

Almost surely, 2^{51751765207651} is an apocalyptic number.

51751765207651 is a deficient number, since it is larger than the sum of its proper divisors (3480861865469).

51751765207651 is a wasteful number, since it uses less digits than its factorization.

51751765207651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16835334.

The product of its (nonzero) digits is 15435000, while the sum is 58.

The spelling of 51751765207651 in words is "fifty-one trillion, seven hundred fifty-one billion, seven hundred sixty-five million, two hundred seven thousand, six hundred fifty-one".