51211645125041 has 32 divisors (see below), whose sum is σ = 53223974643840. Its totient is φ = 49235995929600.

The previous prime is 51211645125031. The next prime is 51211645125049. The reversal of 51211645125041 is 14052154611215.

51211645125041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51211645125041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51211645124986 and 51211645125004.

It is not an unprimeable number, because it can be changed into a prime (51211645125049) 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 31 ways as a sum of consecutive naturals, for example, 2393392355 + ... + 2393413751.

It is an arithmetic number, because the mean of its divisors is an integer number (1663249207620).

Almost surely, 2^{51211645125041} is an apocalyptic number.

It is an amenable number.

51211645125041 is a deficient number, since it is larger than the sum of its proper divisors (2012329518799).

51211645125041 is a wasteful number, since it uses less digits than its factorization.

51211645125041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23745.

The product of its (nonzero) digits is 48000, while the sum is 38.

Adding to 51211645125041 its reverse (14052154611215), we get a palindrome (65263799736256).

The spelling of 51211645125041 in words is "fifty-one trillion, two hundred eleven billion, six hundred forty-five million, one hundred twenty-five thousand, forty-one".