481821149897 has 2 divisors, whose sum is σ = 481821149898. Its totient is φ = 481821149896.

The previous prime is 481821149699. The next prime is 481821149899. The reversal of 481821149897 is 798941128184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452190347401 + 29630802496 = 672451^2 + 172136^2 .

It is a cyclic number.

It is not a de Polignac number, because 481821149897 - 2²⁸ = 481552714441 is a prime.

It is a super-2 number, since 2×481821149897² (a number of 24 digits) contains 22 as substring.

Together with 481821149899, 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 (481821149899) 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, 240910574948 + 240910574949.

It is an arithmetic number, because the mean of its divisors is an integer number (240910574949).

Almost surely, 2^481821149897 is an apocalyptic number.

It is an amenable number.

481821149897 is a deficient number, since it is larger than the sum of its proper divisors (1).

481821149897 is an equidigital number, since it uses as much as digits as its factorization.

481821149897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9289728, while the sum is 62.

The spelling of 481821149897 in words is "four hundred eighty-one billion, eight hundred twenty-one million, one hundred forty-nine thousand, eight hundred ninety-seven".