51566000314481 has 2 divisors, whose sum is σ = 51566000314482. Its totient is φ = 51566000314480.

The previous prime is 51566000314441. The next prime is 51566000314483. The reversal of 51566000314481 is 18441300066515.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50995309210000 + 570691104481 = 7141100^2 + 755441^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51566000314481 is a prime.

It is a super-2 number, since 2×51566000314481² (a number of 28 digits) contains 22 as substring.

Together with 51566000314483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51566000314483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25783000157240 + 25783000157241.

It is an arithmetic number, because the mean of its divisors is an integer number (25783000157241).

Almost surely, 2^{51566000314481} is an apocalyptic number.

It is an amenable number.

51566000314481 is a deficient number, since it is larger than the sum of its proper divisors (1).

51566000314481 is an equidigital number, since it uses as much as digits as its factorization.

51566000314481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 51566000314481 in words is "fifty-one trillion, five hundred sixty-six billion, three hundred fourteen thousand, four hundred eighty-one".