161304244000 has 192 divisors, whose sum is σ = 414883752192. Its totient is φ = 61518336000.

The previous prime is 161304243949. The next prime is 161304244021. The reversal of 161304244000 is 442403161.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30449352 + ... + 30454648.

It is an arithmetic number, because the mean of its divisors is an integer number (2160852876).

Almost surely, 2^161304244000 is an apocalyptic number.

161304244000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161304244000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207441876096).

161304244000 is an abundant number, since it is smaller than the sum of its proper divisors (253579508192).

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

161304244000 is a wasteful number, since it uses less digits than its factorization.

161304244000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676 (or 5658 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 161304244000 its reverse (442403161), we get a palindrome (161746647161).

The spelling of 161304244000 in words is "one hundred sixty-one billion, three hundred four million, two hundred forty-four thousand".