51073740019 has 2 divisors, whose sum is σ = 51073740020. Its totient is φ = 51073740018.

The previous prime is 51073740017. The next prime is 51073740043. The reversal of 51073740019 is 91004737015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51073740019 - 2¹ = 51073740017 is a prime.

It is a super-2 number, since 2×51073740019² (a number of 22 digits) contains 22 as substring.

Together with 51073740017, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51073740019.

It is not a weakly prime, because it can be changed into another prime (51073740013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25536870009 + 25536870010.

It is an arithmetic number, because the mean of its divisors is an integer number (25536870010).

Almost surely, 2^51073740019 is an apocalyptic number.

51073740019 is a deficient number, since it is larger than the sum of its proper divisors (1).

51073740019 is an equidigital number, since it uses as much as digits as its factorization.

51073740019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 37.

The spelling of 51073740019 in words is "fifty-one billion, seventy-three million, seven hundred forty thousand, nineteen".