51563401335269 has 2 divisors, whose sum is σ = 51563401335270. Its totient is φ = 51563401335268.

The previous prime is 51563401335227. The next prime is 51563401335371. The reversal of 51563401335269 is 96253310436515.

51563401335269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31513201050244 + 20050200285025 = 5613662^2 + 4477745^2 .

It is a cyclic number.

It is not a de Polignac number, because 51563401335269 - 2²⁰ = 51563400286693 is a prime.

It is a super-2 number, since 2×51563401335269² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51563401335269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51563401335769) 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, 25781700667634 + 25781700667635.

It is an arithmetic number, because the mean of its divisors is an integer number (25781700667635).

Almost surely, 2^{51563401335269} is an apocalyptic number.

It is an amenable number.

51563401335269 is a deficient number, since it is larger than the sum of its proper divisors (1).

51563401335269 is an equidigital number, since it uses as much as digits as its factorization.

51563401335269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748000, while the sum is 53.

The spelling of 51563401335269 in words is "fifty-one trillion, five hundred sixty-three billion, four hundred one million, three hundred thirty-five thousand, two hundred sixty-nine".