996871999999 has 4 divisors (see below), whose sum is σ = 996873997680. Its totient is φ = 996870002320.

The previous prime is 996871999853. The next prime is 996872000023. The reversal of 996871999999 is 999999178699.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 996871999999 - 2¹¹ = 996871997951 is a prime.

It is a Duffinian number.

996871999999 is a modest number, since divided by 999999 gives 996871 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996871999499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456747 + ... + 1484035.

It is an arithmetic number, because the mean of its divisors is an integer number (249218499420).

Almost surely, 2^996871999999 is an apocalyptic number.

996871999999 is a deficient number, since it is larger than the sum of its proper divisors (1997681).

996871999999 is a wasteful number, since it uses less digits than its factorization.

996871999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997680.

The product of its digits is 14463698256, while the sum is 94.

The spelling of 996871999999 in words is "nine hundred ninety-six billion, eight hundred seventy-one million, nine hundred ninety-nine thousand, nine hundred ninety-nine".