51807966937 has 2 divisors, whose sum is σ = 51807966938. Its totient is φ = 51807966936.

The previous prime is 51807966929. The next prime is 51807966953. The reversal of 51807966937 is 73966970815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29659383961 + 22148582976 = 172219^2 + 148824^2 .

It is a cyclic number.

It is not a de Polignac number, because 51807966937 - 2³ = 51807966929 is a prime.

It is not a weakly prime, because it can be changed into another prime (51807966907) 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 as a sum of consecutive naturals, namely, 25903983468 + 25903983469.

It is an arithmetic number, because the mean of its divisors is an integer number (25903983469).

Almost surely, 2^51807966937 is an apocalyptic number.

It is an amenable number.

51807966937 is a deficient number, since it is larger than the sum of its proper divisors (1).

51807966937 is an equidigital number, since it uses as much as digits as its factorization.

51807966937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17146080, while the sum is 61.

The spelling of 51807966937 in words is "fifty-one billion, eight hundred seven million, nine hundred sixty-six thousand, nine hundred thirty-seven".