9801081144 has 48 divisors (see below), whose sum is σ = 27941682600. Its totient is φ = 3095077824.

The previous prime is 9801081139. The next prime is 9801081209. The reversal of 9801081144 is 4411801089.

It is a super-2 number, since 2×9801081144² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 9801081099 and 9801081108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3580899 + ... + 3583634.

Almost surely, 2^9801081144 is an apocalyptic number.

It is an amenable number.

9801081144 is an abundant number, since it is smaller than the sum of its proper divisors (18140601456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9801081144 is a wasteful number, since it uses less digits than its factorization.

9801081144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164564 (or 7164557 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 9801081144 is about 99000.4098173336. The cubic root of 9801081144 is about 2140.0536528313.

The spelling of 9801081144 in words is "nine billion, eight hundred one million, eighty-one thousand, one hundred forty-four".