51430432019 has 2 divisors, whose sum is σ = 51430432020. Its totient is φ = 51430432018.

The previous prime is 51430432007. The next prime is 51430432159. The reversal of 51430432019 is 91023403415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51430432019 - 2¹⁶ = 51430366483 is a prime.

It is a super-2 number, since 2×51430432019² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51430432619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25715216009 + 25715216010.

It is an arithmetic number, because the mean of its divisors is an integer number (25715216010).

Almost surely, 2^51430432019 is an apocalyptic number.

51430432019 is a deficient number, since it is larger than the sum of its proper divisors (1).

51430432019 is an equidigital number, since it uses as much as digits as its factorization.

51430432019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 51430432019 in words is "fifty-one billion, four hundred thirty million, four hundred thirty-two thousand, nineteen".