481353969581 has 2 divisors, whose sum is σ = 481353969582. Its totient is φ = 481353969580.

The previous prime is 481353969553. The next prime is 481353969619. The reversal of 481353969581 is 185969353184.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432483793225 + 48870176356 = 657635^2 + 221066^2 .

It is a cyclic number.

It is not a de Polignac number, because 481353969581 - 2¹⁸ = 481353707437 is a prime.

It is a super-2 number, since 2×481353969581² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481353069581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240676984790 + 240676984791.

It is an arithmetic number, because the mean of its divisors is an integer number (240676984791).

Almost surely, 2^481353969581 is an apocalyptic number.

It is an amenable number.

481353969581 is a deficient number, since it is larger than the sum of its proper divisors (1).

481353969581 is an equidigital number, since it uses as much as digits as its factorization.

481353969581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27993600, while the sum is 62.

The spelling of 481353969581 in words is "four hundred eighty-one billion, three hundred fifty-three million, nine hundred sixty-nine thousand, five hundred eighty-one".