51434204489 has 2 divisors, whose sum is σ = 51434204490. Its totient is φ = 51434204488.

The previous prime is 51434204473. The next prime is 51434204537. The reversal of 51434204489 is 98440243415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47727830089 + 3706374400 = 218467^2 + 60880^2 .

It is a cyclic number.

It is not a de Polignac number, because 51434204489 - 2⁴ = 51434204473 is a prime.

It is a super-2 number, since 2×51434204489² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51434204389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25717102244 + 25717102245.

It is an arithmetic number, because the mean of its divisors is an integer number (25717102245).

Almost surely, 2^51434204489 is an apocalyptic number.

It is an amenable number.

51434204489 is a deficient number, since it is larger than the sum of its proper divisors (1).

51434204489 is an equidigital number, since it uses as much as digits as its factorization.

51434204489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 51434204489 in words is "fifty-one billion, four hundred thirty-four million, two hundred four thousand, four hundred eighty-nine".