9852660643 has 6 divisors (see below), whose sum is σ = 11461258356. Its totient is φ = 8445137652.

The previous prime is 9852660589. The next prime is 9852660731. The reversal of 9852660643 is 3460662589.

9852660643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9852660643 - 2²¹ = 9850563491 is a prime.

It is a super-2 number, since 2×9852660643² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 201074707 = 9852660643 / (9 + 8 + 5 + 2 + 6 + 6 + 0 + 6 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9852660943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100537305 + ... + 100537402.

It is an arithmetic number, because the mean of its divisors is an integer number (1910209726).

Almost surely, 2^9852660643 is an apocalyptic number.

9852660643 is a deficient number, since it is larger than the sum of its proper divisors (1608597713).

9852660643 is a wasteful number, since it uses less digits than its factorization.

9852660643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201074721 (or 201074714 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The square root of 9852660643 is about 99260.5694271396. The cubic root of 9852660643 is about 2143.8011926134.

The spelling of 9852660643 in words is "nine billion, eight hundred fifty-two million, six hundred sixty thousand, six hundred forty-three".