9999641136 has 40 divisors (see below), whose sum is σ = 26196251904. Its totient is φ = 3286265920.

The previous prime is 9999641131. The next prime is 9999641159. The reversal of 9999641136 is 6311469999.

It is not an unprimeable number, because it can be changed into a prime (9999641131) 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, 1463676 + ... + 1470491.

Almost surely, 2^9999641136 is an apocalyptic number.

It is an amenable number.

9999641136 is an abundant number, since it is smaller than the sum of its proper divisors (16196610768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9999641136 is a wasteful number, since it uses less digits than its factorization.

9999641136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934249 (or 2934243 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 57.

The square root of 9999641136 is about 99998.2056639018. The cubic root of 9999641136 is about 2154.4089180886.

The spelling of 9999641136 in words is "nine billion, nine hundred ninety-nine million, six hundred forty-one thousand, one hundred thirty-six".