9912506345856 has 96 divisors (see below), whose sum is σ = 29187624814920. Its totient is φ = 3227327631360.

The previous prime is 9912506345849. The next prime is 9912506345857. The reversal of 9912506345856 is 6585436052199.

9912506345856 is a `hidden beast` number, since 9 + 9 + 1 + 2 + 506 + 3 + 45 + 85 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 9912506345793 and 9912506345802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9912506345857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100004025 + ... + 100103096.

Almost surely, 2^{9912506345856} is an apocalyptic number.

9912506345856 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

9912506345856 is an abundant number, since it is smaller than the sum of its proper divisors (19275118469064).

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

9912506345856 is a wasteful number, since it uses less digits than its factorization.

9912506345856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200107184 (or 200107169 counting only the distinct ones).

The product of its (nonzero) digits is 69984000, while the sum is 63.

The spelling of 9912506345856 in words is "nine trillion, nine hundred twelve billion, five hundred six million, three hundred forty-five thousand, eight hundred fifty-six".