51956356366097 has 2 divisors, whose sum is σ = 51956356366098. Its totient is φ = 51956356366096.

The previous prime is 51956356365959. The next prime is 51956356366151. The reversal of 51956356366097 is 79066365365915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40671218005201 + 11285138360896 = 6377399^2 + 3359336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51956356366097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51956356366097.

It is not a weakly prime, because it can be changed into another prime (51956356366997) 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, 25978178183048 + 25978178183049.

It is an arithmetic number, because the mean of its divisors is an integer number (25978178183049).

Almost surely, 2^{51956356366097} is an apocalyptic number.

It is an amenable number.

51956356366097 is a deficient number, since it is larger than the sum of its proper divisors (1).

51956356366097 is an equidigital number, since it uses as much as digits as its factorization.

51956356366097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 826686000, while the sum is 71.

The spelling of 51956356366097 in words is "fifty-one trillion, nine hundred fifty-six billion, three hundred fifty-six million, three hundred sixty-six thousand, ninety-seven".