612478320089 has 2 divisors, whose sum is σ = 612478320090. Its totient is φ = 612478320088.

The previous prime is 612478320061. The next prime is 612478320119. The reversal of 612478320089 is 980023874216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 589770241225 + 22708078864 = 767965^2 + 150692^2 .

It is a cyclic number.

It is not a de Polignac number, because 612478320089 - 2⁸ = 612478319833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (612478320589) 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, 306239160044 + 306239160045.

It is an arithmetic number, because the mean of its divisors is an integer number (306239160045).

Almost surely, 2^612478320089 is an apocalyptic number.

It is an amenable number.

612478320089 is a deficient number, since it is larger than the sum of its proper divisors (1).

612478320089 is an equidigital number, since it uses as much as digits as its factorization.

612478320089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 612478320089 in words is "six hundred twelve billion, four hundred seventy-eight million, three hundred twenty thousand, eighty-nine".