999823142916 has 144 divisors (see below), whose sum is σ = 2780686132224. Its totient is φ = 300980199168.

The previous prime is 999823142897. The next prime is 999823142917. The reversal of 999823142916 is 619241328999.

999823142916 is a `hidden beast` number, since 9 + 99 + 82 + 31 + 429 + 16 = 666.

999823142916 is a nontrivial binomial coefficient, being equal to C(1414089, 2).

It is a super-2 number, since 2×999823142916² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (999823142917) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73525830 + ... + 73539426.

Almost surely, 2^999823142916 is an apocalyptic number.

999823142916 is the 1414088-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999823142916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1390343066112).

999823142916 is an abundant number, since it is smaller than the sum of its proper divisors (1780862989308).

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

999823142916 is a wasteful number, since it uses less digits than its factorization.

999823142916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17010 (or 17005 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 63.

The spelling of 999823142916 in words is "nine hundred ninety-nine billion, eight hundred twenty-three million, one hundred forty-two thousand, nine hundred sixteen".