161116824 has 96 divisors (see below), whose sum is σ = 447678000. Its totient is φ = 48280320.

The previous prime is 161116811. The next prime is 161116841. The reversal of 161116824 is 428611161.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 161116791 and 161116800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316282 + ... + 316790.

Almost surely, 2^161116824 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 161116824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223839000).

161116824 is an abundant number, since it is smaller than the sum of its proper divisors (286561176).

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

161116824 is a wasteful number, since it uses less digits than its factorization.

161116824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 634 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 161116824 is about 12693.1802161633. The cubic root of 161116824 is about 544.1437318449.

Adding to 161116824 its reverse (428611161), we get a palindrome (589727985).

The spelling of 161116824 in words is "one hundred sixty-one million, one hundred sixteen thousand, eight hundred twenty-four".