999816072488 has 64 divisors (see below), whose sum is σ = 1990244433600. Its totient is φ = 470855060928.

The previous prime is 999816072487. The next prime is 999816072509. The reversal of 999816072488 is 884270618999.

It is not an unprimeable number, because it can be changed into a prime (999816072487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9440195 + ... + 9545517.

It is an arithmetic number, because the mean of its divisors is an integer number (31097569275).

Almost surely, 2^999816072488 is an apocalyptic number.

It is an amenable number.

999816072488 is a deficient number, since it is larger than the sum of its proper divisors (990428361112).

999816072488 is a wasteful number, since it uses less digits than its factorization.

999816072488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105559 (or 105517 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 71.

The spelling of 999816072488 in words is "nine hundred ninety-nine billion, eight hundred sixteen million, seventy-two thousand, four hundred eighty-eight".