9975286881 has 96 divisors (see below), whose sum is σ = 17773516800. Its totient is φ = 5264766720.

The previous prime is 9975286847. The next prime is 9975286883. The reversal of 9975286881 is 1886825799.

It is a happy number.

9975286881 is a nontrivial binomial coefficient, being equal to C(141247, 2).

It is not a de Polignac number, because 9975286881 - 2¹¹ = 9975284833 is a prime.

It is a super-2 number, since 2×9975286881² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (9975286883) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9674836 + ... + 9675866.

It is an arithmetic number, because the mean of its divisors is an integer number (185140800).

Almost surely, 2^9975286881 is an apocalyptic number.

9975286881 is the 141246-th triangular number.

It is an amenable number.

9975286881 is a deficient number, since it is larger than the sum of its proper divisors (7798229919).

9975286881 is a wasteful number, since it uses less digits than its factorization.

9975286881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259 (or 1256 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 63.

The square root of 9975286881 is about 99876.3579682399. The cubic root of 9975286881 is about 2152.6584659970.

The spelling of 9975286881 in words is "nine billion, nine hundred seventy-five million, two hundred eighty-six thousand, eight hundred eighty-one".