9936365521 has 8 divisors (see below), whose sum is σ = 10101716064. Its totient is φ = 9771516480.

The previous prime is 9936365519. The next prime is 9936365531. The reversal of 9936365521 is 1255636399.

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 9936365521 - 2¹ = 9936365519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9936365531) 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, 85315 + ... + 164776.

It is an arithmetic number, because the mean of its divisors is an integer number (1262714508).

Almost surely, 2^9936365521 is an apocalyptic number.

It is an amenable number.

9936365521 is a deficient number, since it is larger than the sum of its proper divisors (165350543).

9936365521 is a wasteful number, since it uses less digits than its factorization.

9936365521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250751.

The product of its digits is 1312200, while the sum is 49.

The square root of 9936365521 is about 99681.3198197135. The cubic root of 9936365521 is about 2149.8550845899.

The spelling of 9936365521 in words is "nine billion, nine hundred thirty-six million, three hundred sixty-five thousand, five hundred twenty-one".