9999916515263 has 4 divisors (see below), whose sum is σ = 10009615756368. Its totient is φ = 9990217274160.

The previous prime is 9999916515217. The next prime is 9999916515271. The reversal of 9999916515263 is 3625156199999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9999916515263 - 2²⁶ = 9999849406399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999916115263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4849619006 + ... + 4849621067.

It is an arithmetic number, because the mean of its divisors is an integer number (2502403939092).

Almost surely, 2^{9999916515263} is an apocalyptic number.

9999916515263 is a deficient number, since it is larger than the sum of its proper divisors (9699241105).

9999916515263 is a wasteful number, since it uses less digits than its factorization.

9999916515263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9699241104.

The product of its digits is 318864600, while the sum is 74.

The spelling of 9999916515263 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred sixteen million, five hundred fifteen thousand, two hundred sixty-three".