51802209659 has 2 divisors, whose sum is σ = 51802209660. Its totient is φ = 51802209658.

The previous prime is 51802209647. The next prime is 51802209671. The reversal of 51802209659 is 95690220815.

It is a balanced prime because it is at equal distance from previous prime (51802209647) and next prime (51802209671).

It is a cyclic number.

It is not a de Polignac number, because 51802209659 - 2⁴ = 51802209643 is a prime.

It is not a weakly prime, because it can be changed into another prime (51802209359) 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, 25901104829 + 25901104830.

It is an arithmetic number, because the mean of its divisors is an integer number (25901104830).

Almost surely, 2^51802209659 is an apocalyptic number.

51802209659 is a deficient number, since it is larger than the sum of its proper divisors (1).

51802209659 is an equidigital number, since it uses as much as digits as its factorization.

51802209659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 51802209659 in words is "fifty-one billion, eight hundred two million, two hundred nine thousand, six hundred fifty-nine".