9912919520 has 96 divisors (see below), whose sum is σ = 27311256000. Its totient is φ = 3398696448.

The previous prime is 9912919483. The next prime is 9912919529. The reversal of 9912919520 is 259192199.

9912919520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9912919529) 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 15 ways as a sum of consecutive naturals, for example, 35435 + ... + 145194.

It is an arithmetic number, because the mean of its divisors is an integer number (284492250).

Almost surely, 2^9912919520 is an apocalyptic number.

It is an amenable number.

9912919520 is an abundant number, since it is smaller than the sum of its proper divisors (17398336480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9912919520 is a wasteful number, since it uses less digits than its factorization.

9912919520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180665 (or 180643 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 47.

The square root of 9912919520 is about 99563.6455740749. The cubic root of 9912919520 is about 2148.1628091370.

The spelling of 9912919520 in words is "nine billion, nine hundred twelve million, nine hundred nineteen thousand, five hundred twenty".