478261348321 has 2 divisors, whose sum is σ = 478261348322. Its totient is φ = 478261348320.

The previous prime is 478261348307. The next prime is 478261348333. The reversal of 478261348321 is 123843162874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 476852397025 + 1408951296 = 690545^2 + 37536^2 .

It is a cyclic number.

It is not a de Polignac number, because 478261348321 - 2¹⁷ = 478261217249 is a prime.

It is not a weakly prime, because it can be changed into another prime (478261348351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239130674160 + 239130674161.

It is an arithmetic number, because the mean of its divisors is an integer number (239130674161).

Almost surely, 2^478261348321 is an apocalyptic number.

It is an amenable number.

478261348321 is a deficient number, since it is larger than the sum of its proper divisors (1).

478261348321 is an equidigital number, since it uses as much as digits as its factorization.

478261348321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1548288, while the sum is 49.

The spelling of 478261348321 in words is "four hundred seventy-eight billion, two hundred sixty-one million, three hundred forty-eight thousand, three hundred twenty-one".