478012798609 has 2 divisors, whose sum is σ = 478012798610. Its totient is φ = 478012798608.

The previous prime is 478012798561. The next prime is 478012798639. The reversal of 478012798609 is 906897210874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473639886225 + 4372912384 = 688215^2 + 66128^2 .

It is a cyclic number.

It is not a de Polignac number, because 478012798609 - 2¹⁹ = 478012274321 is a prime.

It is not a weakly prime, because it can be changed into another prime (478012798639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239006399304 + 239006399305.

It is an arithmetic number, because the mean of its divisors is an integer number (239006399305).

Almost surely, 2^478012798609 is an apocalyptic number.

It is an amenable number.

478012798609 is a deficient number, since it is larger than the sum of its proper divisors (1).

478012798609 is an equidigital number, since it uses as much as digits as its factorization.

478012798609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 478012798609 in words is "four hundred seventy-eight billion, twelve million, seven hundred ninety-eight thousand, six hundred nine".