9689156533081 has 9 divisors (see below), whose sum is σ = 10011892047669. Its totient is φ = 9376509714300.

The previous prime is 9689156533079. The next prime is 9689156533087. The reversal of 9689156533081 is 1803356519869.

The square root of 9689156533081 is 3112741.

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

It is not a de Polignac number, because 9689156533081 - 2¹ = 9689156533079 is a prime.

It is a super-2 number, since 2×9689156533081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9689156533087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 96444766 + ... + 96545176.

It is an arithmetic number, because the mean of its divisors is an integer number (1112432449741).

Almost surely, 2^{9689156533081} is an apocalyptic number.

9689156533081 is the 3112741-st square number.

9689156533081 is the 1556371-st centered octagonal number.

It is an amenable number.

9689156533081 is a deficient number, since it is larger than the sum of its proper divisors (322735514588).

9689156533081 is an frugal number, since it uses more digits than its factorization.

9689156533081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200884 (or 100442 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 64.

Multiplying 9689156533081 by its sum of digits (64), we get a square (620106018117184 = 24901928²).

The spelling of 9689156533081 in words is "nine trillion, six hundred eighty-nine billion, one hundred fifty-six million, five hundred thirty-three thousand, eighty-one".