999817424512 has 32 divisors (see below), whose sum is σ = 1994079746880. Its totient is φ = 499342507776.

The previous prime is 999817424479. The next prime is 999817424533. The reversal of 999817424512 is 215424718999.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4310008 + ... + 4536055.

It is an arithmetic number, because the mean of its divisors is an integer number (62314992090).

Almost surely, 2^999817424512 is an apocalyptic number.

It is an amenable number.

999817424512 is a deficient number, since it is larger than the sum of its proper divisors (994262322368).

999817424512 is an equidigital number, since it uses as much as digits as its factorization.

999817424512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8846960 (or 8846948 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 61.

The spelling of 999817424512 in words is "nine hundred ninety-nine billion, eight hundred seventeen million, four hundred twenty-four thousand, five hundred twelve".