478227376813 has 2 divisors, whose sum is σ = 478227376814. Its totient is φ = 478227376812.

The previous prime is 478227376807. The next prime is 478227376897. The reversal of 478227376813 is 318673722874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 430464585604 + 47762791209 = 656098^2 + 218547^2 .

It is a cyclic number.

It is not a de Polignac number, because 478227376813 - 2¹³ = 478227368621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478227376013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239113688406 + 239113688407.

It is an arithmetic number, because the mean of its divisors is an integer number (239113688407).

Almost surely, 2^478227376813 is an apocalyptic number.

It is an amenable number.

478227376813 is a deficient number, since it is larger than the sum of its proper divisors (1).

478227376813 is an equidigital number, since it uses as much as digits as its factorization.

478227376813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18966528, while the sum is 58.

The spelling of 478227376813 in words is "four hundred seventy-eight billion, two hundred twenty-seven million, three hundred seventy-six thousand, eight hundred thirteen".