9985559611 has 8 divisors (see below), whose sum is σ = 10629219600. Its totient is φ = 9353710080.

The previous prime is 9985559599. The next prime is 9985559653. The reversal of 9985559611 is 1169555899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9985559611 - 2¹³ = 9985551419 is a prime.

It is a super-2 number, since 2×9985559611² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9985559681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2950870 + ... + 2954251.

It is an arithmetic number, because the mean of its divisors is an integer number (1328652450).

Almost surely, 2^9985559611 is an apocalyptic number.

9985559611 is a deficient number, since it is larger than the sum of its proper divisors (643659989).

9985559611 is a wasteful number, since it uses less digits than its factorization.

9985559611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5905229.

The product of its digits is 4374000, while the sum is 58.

The square root of 9985559611 is about 99927.7719705588. The cubic root of 9985559611 is about 2153.3971612943.

The spelling of 9985559611 in words is "nine billion, nine hundred eighty-five million, five hundred fifty-nine thousand, six hundred eleven".