999928020032 has 168 divisors, whose sum is σ = 2264567341824. Its totient is φ = 436295430144.

The previous prime is 999928020031. The next prime is 999928020053. The reversal of 999928020032 is 230020829999.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (999928020031) 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, 18433013 + ... + 18487179.

Almost surely, 2^999928020032 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 999928020032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132283670912).

999928020032 is an abundant number, since it is smaller than the sum of its proper divisors (1264639321792).

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

999928020032 is a wasteful number, since it uses less digits than its factorization.

999928020032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54281 (or 54252 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 53.

The spelling of 999928020032 in words is "nine hundred ninety-nine billion, nine hundred twenty-eight million, twenty thousand, thirty-two".