51988416019 has 2 divisors, whose sum is σ = 51988416020. Its totient is φ = 51988416018.

The previous prime is 51988416013. The next prime is 51988416041. The reversal of 51988416019 is 91061488915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51988416019 - 2¹⁹ = 51987891731 is a prime.

It is a super-2 number, since 2×51988416019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51988416013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25994208009 + 25994208010.

It is an arithmetic number, because the mean of its divisors is an integer number (25994208010).

Almost surely, 2^51988416019 is an apocalyptic number.

51988416019 is a deficient number, since it is larger than the sum of its proper divisors (1).

51988416019 is an equidigital number, since it uses as much as digits as its factorization.

51988416019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 52.

The spelling of 51988416019 in words is "fifty-one billion, nine hundred eighty-eight million, four hundred sixteen thousand, nineteen".