999997999488 has 64 divisors (see below), whose sum is σ = 2951382994800. Its totient is φ = 333332665344.

The previous prime is 999997999487. The next prime is 999997999489. The reversal of 999997999488 is 884999799999.

It is an interprime number because it is at equal distance from previous prime (999997999487) and next prime (999997999489).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999997999487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144672181 + ... + 144679092.

Almost surely, 2^999997999488 is an apocalyptic number.

It is an amenable number.

999997999488 is an abundant number, since it is smaller than the sum of its proper divisors (1951384995312).

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

999997999488 is a wasteful number, since it uses less digits than its factorization.

999997999488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289351296 (or 289351278 counting only the distinct ones).

The product of its digits is 77139724032, while the sum is 99.

The spelling of 999997999488 in words is "nine hundred ninety-nine billion, nine hundred ninety-seven million, nine hundred ninety-nine thousand, four hundred eighty-eight".