9699543419281 has 27 divisors (see below), whose sum is σ = 9922260522171. Its totient is φ = 9481805742864.

The previous prime is 9699543419263. The next prime is 9699543419317. The reversal of 9699543419281 is 1829143459969.

It is a happy number.

The square root of 9699543419281 is 3114409.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2843084961025 + 6856458458256 = 1686145^2 + 2618484^2 .

It is not a de Polignac number, because 9699543419281 - 2¹¹ = 9699543417233 is a prime.

It is a super-2 number, since 2×9699543419281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9699543419281.

It is not an unprimeable number, because it can be changed into a prime (9699543419221) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 40583863560 + ... + 40583863798.

Almost surely, 2^{9699543419281} is an apocalyptic number.

9699543419281 is the 3114409-th square number.

9699543419281 is the 1557205-th centered octagonal number.

It is an amenable number.

9699543419281 is a deficient number, since it is larger than the sum of its proper divisors (222717102890).

9699543419281 is an frugal number, since it uses more digits than its factorization.

9699543419281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958 (or 479 counting only the distinct ones).

The product of its digits is 151165440, while the sum is 70.

The spelling of 9699543419281 in words is "nine trillion, six hundred ninety-nine billion, five hundred forty-three million, four hundred nineteen thousand, two hundred eighty-one".