481687365281 has 2 divisors, whose sum is σ = 481687365282. Its totient is φ = 481687365280.

The previous prime is 481687365223. The next prime is 481687365323. The reversal of 481687365281 is 182563786184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 439514635681 + 42172729600 = 662959^2 + 205360^2 .

It is a cyclic number.

It is not a de Polignac number, because 481687365281 - 2⁶ = 481687365217 is a prime.

It is a super-2 number, since 2×481687365281² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 481687365281.

It is not a weakly prime, because it can be changed into another prime (481687365221) 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, 240843682640 + 240843682641.

It is an arithmetic number, because the mean of its divisors is an integer number (240843682641).

Almost surely, 2^481687365281 is an apocalyptic number.

It is an amenable number.

481687365281 is a deficient number, since it is larger than the sum of its proper divisors (1).

481687365281 is an equidigital number, since it uses as much as digits as its factorization.

481687365281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15482880, while the sum is 59.

The spelling of 481687365281 in words is "four hundred eighty-one billion, six hundred eighty-seven million, three hundred sixty-five thousand, two hundred eighty-one".