51711466126447 has 2 divisors, whose sum is σ = 51711466126448. Its totient is φ = 51711466126446.

The previous prime is 51711466126427. The next prime is 51711466126471. The reversal of 51711466126447 is 74462166411715.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51711466126447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51711466126427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25855733063223 + 25855733063224.

It is an arithmetic number, because the mean of its divisors is an integer number (25855733063224).

Almost surely, 2^{51711466126447} is an apocalyptic number.

51711466126447 is a deficient number, since it is larger than the sum of its proper divisors (1).

51711466126447 is an equidigital number, since it uses as much as digits as its factorization.

51711466126447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 55.

The spelling of 51711466126447 in words is "fifty-one trillion, seven hundred eleven billion, four hundred sixty-six million, one hundred twenty-six thousand, four hundred forty-seven".