9996757815 has 16 divisors (see below), whose sum is σ = 17448886656. Its totient is φ = 4846912800.

The previous prime is 9996757759. The next prime is 9996757817. The reversal of 9996757815 is 5187576999.

It is not a de Polignac number, because 9996757815 - 2¹⁴ = 9996741431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9996757817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30293041 + ... + 30293370.

It is an arithmetic number, because the mean of its divisors is an integer number (1090555416).

Almost surely, 2^9996757815 is an apocalyptic number.

9996757815 is a deficient number, since it is larger than the sum of its proper divisors (7452128841).

9996757815 is a wasteful number, since it uses less digits than its factorization.

9996757815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60586430.

The product of its digits is 42865200, while the sum is 66.

The square root of 9996757815 is about 99983.7877608165. The cubic root of 9996757815 is about 2154.2018290029.

It can be divided in two parts, 999675 and 7815, that added together give a triangular number (1007490 = T₁₄₁₉).

The spelling of 9996757815 in words is "nine billion, nine hundred ninety-six million, seven hundred fifty-seven thousand, eight hundred fifteen".