481445156561 has 2 divisors, whose sum is σ = 481445156562. Its totient is φ = 481445156560.

The previous prime is 481445156557. The next prime is 481445156579. The reversal of 481445156561 is 165651544184.

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., 325356160000 + 156088996561 = 570400^2 + 395081^2 .

It is a cyclic number.

It is not a de Polignac number, because 481445156561 - 2² = 481445156557 is a prime.

It is not a weakly prime, because it can be changed into another prime (481445156531) 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, 240722578280 + 240722578281.

It is an arithmetic number, because the mean of its divisors is an integer number (240722578281).

Almost surely, 2^481445156561 is an apocalyptic number.

It is an amenable number.

481445156561 is a deficient number, since it is larger than the sum of its proper divisors (1).

481445156561 is an equidigital number, since it uses as much as digits as its factorization.

481445156561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304000, while the sum is 50.

The spelling of 481445156561 in words is "four hundred eighty-one billion, four hundred forty-five million, one hundred fifty-six thousand, five hundred sixty-one".