9648421281 has 12 divisors (see below), whose sum is σ = 14756409252. Its totient is φ = 6053911296.

The previous prime is 9648421259. The next prime is 9648421283. The reversal of 9648421281 is 1821248469.

9648421281 is a `hidden beast` number, since 96 + 484 + 2 + 1 + 2 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8971120656 + 677300625 = 94716^2 + 26025^2 .

It is not a de Polignac number, because 9648421281 - 2¹⁷ = 9648290209 is a prime.

It is a super-2 number, since 2×9648421281² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9648421283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31530636 + ... + 31530941.

It is an arithmetic number, because the mean of its divisors is an integer number (1229700771).

Almost surely, 2^9648421281 is an apocalyptic number.

It is an amenable number.

9648421281 is a deficient number, since it is larger than the sum of its proper divisors (5107987971).

9648421281 is a wasteful number, since it uses less digits than its factorization.

9648421281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63061600 (or 63061597 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 9648421281 is about 98226.3777251304. The cubic root of 9648421281 is about 2128.8844313721.

The spelling of 9648421281 in words is "nine billion, six hundred forty-eight million, four hundred twenty-one thousand, two hundred eighty-one".