996181000000 has 196 divisors, whose sum is σ = 2528537634304. Its totient is φ = 389188800000.

The previous prime is 996180999997. The next prime is 996181000033. The reversal of 996181000000 is 181699.

It is a super-2 number, since 2×996181000000² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 996181000000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 42988417 + ... + 43011583.

Almost surely, 2^996181000000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 996181000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264268817152).

996181000000 is an abundant number, since it is smaller than the sum of its proper divisors (1532356634304).

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

996181000000 is an frugal number, since it uses more digits than its factorization.

996181000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23252 (or 23217 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

Adding to 996181000000 its reverse (181699), we get a palindrome (996181181699).

The spelling of 996181000000 in words is "nine hundred ninety-six billion, one hundred eighty-one million", and thus it is an aban number.