477981573281 has 2 divisors, whose sum is σ = 477981573282. Its totient is φ = 477981573280.

The previous prime is 477981573221. The next prime is 477981573283. The reversal of 477981573281 is 182375189774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 457673898256 + 20307675025 = 676516^2 + 142505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-477981573281 is a prime.

It is a super-2 number, since 2×477981573281² (a number of 24 digits) contains 22 as substring.

Together with 477981573283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (477981573283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238990786640 + 238990786641.

It is an arithmetic number, because the mean of its divisors is an integer number (238990786641).

Almost surely, 2^477981573281 is an apocalyptic number.

It is an amenable number.

477981573281 is a deficient number, since it is larger than the sum of its proper divisors (1).

477981573281 is an equidigital number, since it uses as much as digits as its factorization.

477981573281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23708160, while the sum is 62.

The spelling of 477981573281 in words is "four hundred seventy-seven billion, nine hundred eighty-one million, five hundred seventy-three thousand, two hundred eighty-one".