999983967264 has 48 divisors (see below), whose sum is σ = 2916619907040. Its totient is φ = 333327988800.

The previous prime is 999983967263. The next prime is 999983967271. The reversal of 999983967264 is 462769389999.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (999983967263) 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 7 ways as a sum of consecutive naturals, for example, 578693562 + ... + 578695289.

It is an arithmetic number, because the mean of its divisors is an integer number (60762914730).

Almost surely, 2^999983967264 is an apocalyptic number.

It is an amenable number.

999983967264 is an abundant number, since it is smaller than the sum of its proper divisors (1916635939776).

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

999983967264 is a wasteful number, since it uses less digits than its factorization.

999983967264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157388870 (or 1157388856 counting only the distinct ones).

The product of its digits is 2857026816, while the sum is 81.

The spelling of 999983967264 in words is "nine hundred ninety-nine billion, nine hundred eighty-three million, nine hundred sixty-seven thousand, two hundred sixty-four".