9618280066881 has 24 divisors (see below), whose sum is σ = 13925418460200. Its totient is φ = 6397260097536.

The previous prime is 9618280066807. The next prime is 9618280066931. The reversal of 9618280066881 is 1886600828169.

9618280066881 is a `hidden beast` number, since 9 + 618 + 2 + 8 + 0 + 0 + 6 + 6 + 8 + 8 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3778517833281 + 5839762233600 = 1943841^2 + 2416560^2 .

It is not a de Polignac number, because 9618280066881 - 2⁷ = 9618280066753 is a prime.

It is a super-2 number, since 2×9618280066881² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9618280066081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41737731 + ... + 41967543.

It is an arithmetic number, because the mean of its divisors is an integer number (580225769175).

Almost surely, 2^{9618280066881} is an apocalyptic number.

It is an amenable number.

9618280066881 is a deficient number, since it is larger than the sum of its proper divisors (4307138393319).

9618280066881 is a wasteful number, since it uses less digits than its factorization.

9618280066881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240625 (or 240622 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 63.

The spelling of 9618280066881 in words is "nine trillion, six hundred eighteen billion, two hundred eighty million, sixty-six thousand, eight hundred eighty-one".