51465220225673 has 2 divisors, whose sum is σ = 51465220225674. Its totient is φ = 51465220225672.

The previous prime is 51465220225633. The next prime is 51465220225681. The reversal of 51465220225673 is 37652202256415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49984221282304 + 1480998943369 = 7069952^2 + 1216963^2 .

It is a cyclic number.

It is not a de Polignac number, because 51465220225673 - 2⁸ = 51465220225417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51465220225613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25732610112836 + 25732610112837.

It is an arithmetic number, because the mean of its divisors is an integer number (25732610112837).

Almost surely, 2^{51465220225673} is an apocalyptic number.

It is an amenable number.

51465220225673 is a deficient number, since it is larger than the sum of its proper divisors (1).

51465220225673 is an equidigital number, since it uses as much as digits as its factorization.

51465220225673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048000, while the sum is 50.

The spelling of 51465220225673 in words is "fifty-one trillion, four hundred sixty-five billion, two hundred twenty million, two hundred twenty-five thousand, six hundred seventy-three".