51807966953 has 2 divisors, whose sum is σ = 51807966954. Its totient is φ = 51807966952.

The previous prime is 51807966937. The next prime is 51807966967. The reversal of 51807966953 is 35966970815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47852437504 + 3955529449 = 218752^2 + 62893^2 .

It is a cyclic number.

It is not a de Polignac number, because 51807966953 - 2⁴ = 51807966937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51807966892 and 51807966901.

It is not a weakly prime, because it can be changed into another prime (51807966053) 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, 25903983476 + 25903983477.

It is an arithmetic number, because the mean of its divisors is an integer number (25903983477).

Almost surely, 2^51807966953 is an apocalyptic number.

It is an amenable number.

51807966953 is a deficient number, since it is larger than the sum of its proper divisors (1).

51807966953 is an equidigital number, since it uses as much as digits as its factorization.

51807966953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12247200, while the sum is 59.

The spelling of 51807966953 in words is "fifty-one billion, eight hundred seven million, nine hundred sixty-six thousand, nine hundred fifty-three".