999078866832 has 160 divisors (see below), whose sum is σ = 2743407446400. Its totient is φ = 312704630784.

The previous prime is 999078866831. The next prime is 999078866843. The reversal of 999078866832 is 238668870999.

It is not an unprimeable number, because it can be changed into a prime (999078866831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171453903 + ... + 171459729.

It is an arithmetic number, because the mean of its divisors is an integer number (17146296540).

Almost surely, 2^999078866832 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 999078866832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1371703723200).

999078866832 is an abundant number, since it is smaller than the sum of its proper divisors (1744328579568).

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

999078866832 is a wasteful number, since it uses less digits than its factorization.

999078866832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9233 (or 9227 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 75.

The spelling of 999078866832 in words is "nine hundred ninety-nine billion, seventy-eight million, eight hundred sixty-six thousand, eight hundred thirty-two".