999989162797328 has 20 divisors (see below), whose sum is σ = 2113613457731088. Its totient is φ = 454540528544160.

The previous prime is 999989162797277. The next prime is 999989162797337. The reversal of 999989162797328 is 823797261989999.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2840878303226 + ... + 2840878303577.

Almost surely, 2^{999989162797328} is an apocalyptic number.

It is an amenable number.

999989162797328 is an abundant number, since it is smaller than the sum of its proper divisors (1113624294933760).

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

999989162797328 is a wasteful number, since it uses less digits than its factorization.

999989162797328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5681756606822 (or 5681756606816 counting only the distinct ones).

The product of its digits is 119995126272, while the sum is 98.

The spelling of 999989162797328 in words is "nine hundred ninety-nine trillion, nine hundred eighty-nine billion, one hundred sixty-two million, seven hundred ninety-seven thousand, three hundred twenty-eight".