9941661499 has 24 divisors (see below), whose sum is σ = 12640615488. Its totient is φ = 7731717840.

The previous prime is 9941661481. The next prime is 9941661503.

9941661499 is nontrivially palindromic in base 10.

9941661499 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 9941661499 - 2⁷ = 9941661371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9941661199) 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 23 ways as a sum of consecutive naturals, for example, 264264 + ... + 299530.

It is an arithmetic number, because the mean of its divisors is an integer number (526692312).

Almost surely, 2^9941661499 is an apocalyptic number.

9941661499 is a deficient number, since it is larger than the sum of its proper divisors (2698953989).

9941661499 is a wasteful number, since it uses less digits than its factorization.

9941661499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35815 (or 35808 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 58.

The square root of 9941661499 is about 99707.8808269437. The cubic root of 9941661499 is about 2150.2369667783.

The spelling of 9941661499 in words is "nine billion, nine hundred forty-one million, six hundred sixty-one thousand, four hundred ninety-nine".