51330663363251 has 2 divisors, whose sum is σ = 51330663363252. Its totient is φ = 51330663363250.

The previous prime is 51330663363229. The next prime is 51330663363253. The reversal of 51330663363251 is 15236336603315.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51330663363251 is a prime.

It is a super-2 number, since 2×51330663363251² (a number of 28 digits) contains 22 as substring.

Together with 51330663363253, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51330663363196 and 51330663363205.

It is not a weakly prime, because it can be changed into another prime (51330663363253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25665331681625 + 25665331681626.

It is an arithmetic number, because the mean of its divisors is an integer number (25665331681626).

Almost surely, 2^{51330663363251} is an apocalyptic number.

51330663363251 is a deficient number, since it is larger than the sum of its proper divisors (1).

51330663363251 is an equidigital number, since it uses as much as digits as its factorization.

51330663363251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2624400, while the sum is 47.

Adding to 51330663363251 its reverse (15236336603315), we get a palindrome (66566999966566).

The spelling of 51330663363251 in words is "fifty-one trillion, three hundred thirty billion, six hundred sixty-three million, three hundred sixty-three thousand, two hundred fifty-one".