999989162797326 has 96 divisors (see below), whose sum is σ = 2239961309816832. Its totient is φ = 297171542528640.

The previous prime is 999989162797277. The next prime is 999989162797337. The reversal of 999989162797326 is 623797261989999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15811305 + ... + 47433908.

It is an arithmetic number, because the mean of its divisors is an integer number (23332930310592).

Almost surely, 2^{999989162797326} is an apocalyptic number.

999989162797326 is an abundant number, since it is smaller than the sum of its proper divisors (1239972147019506).

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

999989162797326 is a wasteful number, since it uses less digits than its factorization.

999989162797326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63245778 (or 63245765 counting only the distinct ones).

The product of its digits is 89996344704, while the sum is 96.

The spelling of 999989162797326 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-six".