481808284021 has 2 divisors, whose sum is σ = 481808284022. Its totient is φ = 481808284020.

The previous prime is 481808284019. The next prime is 481808284031. The reversal of 481808284021 is 120482808184.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242936608996 + 238871675025 = 492886^2 + 488745^2 .

It is a cyclic number.

It is not a de Polignac number, because 481808284021 - 2¹ = 481808284019 is a prime.

Together with 481808284019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481808284031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240904142010 + 240904142011.

It is an arithmetic number, because the mean of its divisors is an integer number (240904142011).

Almost surely, 2^481808284021 is an apocalyptic number.

It is an amenable number.

481808284021 is a deficient number, since it is larger than the sum of its proper divisors (1).

481808284021 is an equidigital number, since it uses as much as digits as its factorization.

481808284021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262144, while the sum is 46.

The spelling of 481808284021 in words is "four hundred eighty-one billion, eight hundred eight million, two hundred eighty-four thousand, twenty-one".