51210630064641 has 4 divisors (see below), whose sum is σ = 68280840086192. Its totient is φ = 34140420043092.

The previous prime is 51210630064609. The next prime is 51210630064687. The reversal of 51210630064641 is 14646003601215.

51210630064641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51210630064641 - 2⁵ = 51210630064609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51210630064641.

It is not an unprimeable number, because it can be changed into a prime (51210630065641) 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 3 ways as a sum of consecutive naturals, for example, 8535105010771 + ... + 8535105010776.

It is an arithmetic number, because the mean of its divisors is an integer number (17070210021548).

Almost surely, 2^{51210630064641} is an apocalyptic number.

It is an amenable number.

51210630064641 is a deficient number, since it is larger than the sum of its proper divisors (17070210021551).

51210630064641 is a wasteful number, since it uses less digits than its factorization.

51210630064641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17070210021550.

The product of its (nonzero) digits is 103680, while the sum is 39.

Adding to 51210630064641 its reverse (14646003601215), we get a palindrome (65856633665856).

The spelling of 51210630064641 in words is "fifty-one trillion, two hundred ten billion, six hundred thirty million, sixty-four thousand, six hundred forty-one".