999997000002 has 768 divisors, whose sum is σ = 3188265615360. Its totient is φ = 223976793600.

The previous prime is 999996999983. The next prime is 999997000027. The reversal of 999997000002 is 200000799999.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 383 ways as a sum of consecutive naturals, for example, 7873992063 + ... + 7873992189.

It is an arithmetic number, because the mean of its divisors is an integer number (4151387520).

Almost surely, 2^999997000002 is an apocalyptic number.

It is a pronic number, being equal to 999998×999999.

It is a practical number, because each smaller number is the sum of distinct divisors of 999997000002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1594132807680).

999997000002 is an abundant number, since it is smaller than the sum of its proper divisors (2188268615358).

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

999997000002 is a wasteful number, since it uses less digits than its factorization.

999997000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 826686, while the sum is 54.

The spelling of 999997000002 in words is "nine hundred ninety-nine billion, nine hundred ninety-seven million, two", and thus it is an aban number.