51005060489 has 2 divisors, whose sum is σ = 51005060490. Its totient is φ = 51005060488.

The previous prime is 51005060437. The next prime is 51005060573. The reversal of 51005060489 is 98406050015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37091678464 + 13913382025 = 192592^2 + 117955^2 .

It is a cyclic number.

It is not a de Polignac number, because 51005060489 - 2⁸ = 51005060233 is a prime.

It is not a weakly prime, because it can be changed into another prime (51005060419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25502530244 + 25502530245.

It is an arithmetic number, because the mean of its divisors is an integer number (25502530245).

Almost surely, 2^51005060489 is an apocalyptic number.

It is an amenable number.

51005060489 is a deficient number, since it is larger than the sum of its proper divisors (1).

51005060489 is an equidigital number, since it uses as much as digits as its factorization.

51005060489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 51005060489 in words is "fifty-one billion, five million, sixty thousand, four hundred eighty-nine".