51630365304487 has 2 divisors, whose sum is σ = 51630365304488. Its totient is φ = 51630365304486.

The previous prime is 51630365304409. The next prime is 51630365304499. The reversal of 51630365304487 is 78440356303615.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51630365304487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51630365304887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25815182652243 + 25815182652244.

It is an arithmetic number, because the mean of its divisors is an integer number (25815182652244).

Almost surely, 2^{51630365304487} is an apocalyptic number.

51630365304487 is a deficient number, since it is larger than the sum of its proper divisors (1).

51630365304487 is an equidigital number, since it uses as much as digits as its factorization.

51630365304487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21772800, while the sum is 55.

The spelling of 51630365304487 in words is "fifty-one trillion, six hundred thirty billion, three hundred sixty-five million, three hundred four thousand, four hundred eighty-seven".