9943012513 has 16 divisors (see below), whose sum is σ = 12092371200. Its totient is φ = 7980926976.

The previous prime is 9943012511. The next prime is 9943012543. The reversal of 9943012513 is 3152103499.

It is a cyclic number.

It is not a de Polignac number, because 9943012513 - 2¹ = 9943012511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9943012511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186256 + ... + 233617.

It is an arithmetic number, because the mean of its divisors is an integer number (755773200).

Almost surely, 2^9943012513 is an apocalyptic number.

It is an amenable number.

9943012513 is a deficient number, since it is larger than the sum of its proper divisors (2149358687).

9943012513 is a wasteful number, since it uses less digits than its factorization.

9943012513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420096.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 9943012513 is about 99714.6554574602. The cubic root of 9943012513 is about 2150.3343639342.

The spelling of 9943012513 in words is "nine billion, nine hundred forty-three million, twelve thousand, five hundred thirteen".