51966944507 has 2 divisors, whose sum is σ = 51966944508. Its totient is φ = 51966944506.

The previous prime is 51966944501. The next prime is 51966944567. The reversal of 51966944507 is 70544966915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51966944507 - 2¹⁸ = 51966682363 is a prime.

It is not a weakly prime, because it can be changed into another prime (51966944501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25983472253 + 25983472254.

It is an arithmetic number, because the mean of its divisors is an integer number (25983472254).

Almost surely, 2^51966944507 is an apocalyptic number.

51966944507 is a deficient number, since it is larger than the sum of its proper divisors (1).

51966944507 is an equidigital number, since it uses as much as digits as its factorization.

51966944507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 51966944507 in words is "fifty-one billion, nine hundred sixty-six million, nine hundred forty-four thousand, five hundred seven".