9885447133481 has 2 divisors, whose sum is σ = 9885447133482. Its totient is φ = 9885447133480.

The previous prime is 9885447133447. The next prime is 9885447133589. The reversal of 9885447133481 is 1843317445889.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8084440189225 + 1801006944256 = 2843315^2 + 1342016^2 .

It is a cyclic number.

It is not a de Polignac number, because 9885447133481 - 2¹⁸ = 9885446871337 is a prime.

It is a super-2 number, since 2×9885447133481² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9885447133981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4942723566740 + 4942723566741.

It is an arithmetic number, because the mean of its divisors is an integer number (4942723566741).

Almost surely, 2^{9885447133481} is an apocalyptic number.

It is an amenable number.

9885447133481 is a deficient number, since it is larger than the sum of its proper divisors (1).

9885447133481 is an equidigital number, since it uses as much as digits as its factorization.

9885447133481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92897280, while the sum is 65.

The spelling of 9885447133481 in words is "nine trillion, eight hundred eighty-five billion, four hundred forty-seven million, one hundred thirty-three thousand, four hundred eighty-one".