51650005000051 has 4 divisors (see below), whose sum is σ = 51708498777832. Its totient is φ = 51591511222272.

The previous prime is 51650005000039. The next prime is 51650005000109. The reversal of 51650005000051 is 15000050005615.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51650005000051 - 2¹⁹ = 51650004475763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51650004999983 and 51650005000019.

It is not an unprimeable number, because it can be changed into a prime (51650005000651) 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 3 ways as a sum of consecutive naturals, for example, 29246887566 + ... + 29246889331.

It is an arithmetic number, because the mean of its divisors is an integer number (12927124694458).

Almost surely, 2^{51650005000051} is an apocalyptic number.

51650005000051 is a deficient number, since it is larger than the sum of its proper divisors (58493777781).

51650005000051 is an equidigital number, since it uses as much as digits as its factorization.

51650005000051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58493777780.

The product of its (nonzero) digits is 3750, while the sum is 28.

Adding to 51650005000051 its reverse (15000050005615), we get a palindrome (66650055005666).

The spelling of 51650005000051 in words is "fifty-one trillion, six hundred fifty billion, five million, fifty-one", and thus it is an aban number.