478771348849 has 2 divisors, whose sum is σ = 478771348850. Its totient is φ = 478771348848.

The previous prime is 478771348843. The next prime is 478771348877. The reversal of 478771348849 is 948843177874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 472243840000 + 6527508849 = 687200^2 + 80793^2 .

It is a cyclic number.

It is not a de Polignac number, because 478771348849 - 2³⁵ = 444411610481 is a prime.

It is not a weakly prime, because it can be changed into another prime (478771348843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239385674424 + 239385674425.

It is an arithmetic number, because the mean of its divisors is an integer number (239385674425).

Almost surely, 2^478771348849 is an apocalyptic number.

It is an amenable number.

478771348849 is a deficient number, since it is larger than the sum of its proper divisors (1).

478771348849 is an equidigital number, since it uses as much as digits as its factorization.

478771348849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 303464448, while the sum is 70.

The spelling of 478771348849 in words is "four hundred seventy-eight billion, seven hundred seventy-one million, three hundred forty-eight thousand, eight hundred forty-nine".