9927945517 has 24 divisors (see below), whose sum is σ = 12123544320. Its totient is φ = 8095510080.

The previous prime is 9927945491. The next prime is 9927945539. The reversal of 9927945517 is 7155497299.

9927945517 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 9927945517 - 2¹¹ = 9927943469 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 (9927945917) 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, 34233 + ... + 145009.

It is an arithmetic number, because the mean of its divisors is an integer number (505147680).

Almost surely, 2^9927945517 is an apocalyptic number.

It is an amenable number.

9927945517 is a deficient number, since it is larger than the sum of its proper divisors (2195598803).

9927945517 is a wasteful number, since it uses less digits than its factorization.

9927945517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110881 (or 110874 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 58.

The square root of 9927945517 is about 99639.0762552524. The cubic root of 9927945517 is about 2149.2476557840.

The spelling of 9927945517 in words is "nine billion, nine hundred twenty-seven million, nine hundred forty-five thousand, five hundred seventeen".