9931078796832 has 336 divisors, whose sum is σ = 32672317476960. Its totient is φ = 2951649662976.

The previous prime is 9931078796791. The next prime is 9931078796867. The reversal of 9931078796832 is 2386978701399.

9931078796832 is a `hidden beast` number, since 99 + 310 + 78 + 79 + 68 + 32 = 666.

It is a super-2 number, since 2×9931078796832² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 6875943 + ... + 8193945.

It is an arithmetic number, because the mean of its divisors is an integer number (97239040110).

Almost surely, 2^{9931078796832} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9931078796832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16336158738480).

9931078796832 is an abundant number, since it is smaller than the sum of its proper divisors (22741238680128).

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

9931078796832 is a wasteful number, since it uses less digits than its factorization.

9931078796832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318067 (or 1318044 counting only the distinct ones).

The product of its (nonzero) digits is 246903552, while the sum is 72.

The spelling of 9931078796832 in words is "nine trillion, nine hundred thirty-one billion, seventy-eight million, seven hundred ninety-six thousand, eight hundred thirty-two".