161005373120 has 84 divisors (see below), whose sum is σ = 392974506912. Its totient is φ = 62831155200.

The previous prime is 161005373101. The next prime is 161005373231. The reversal of 161005373120 is 21373500161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388265 + ... + 687575.

Almost surely, 2^161005373120 is an apocalyptic number.

161005373120 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 161005373120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196487253456).

161005373120 is an abundant number, since it is smaller than the sum of its proper divisors (231969133792).

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

161005373120 is an equidigital number, since it uses as much as digits as its factorization.

161005373120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299410 (or 299359 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

Adding to 161005373120 its reverse (21373500161), we get a palindrome (182378873281).

The spelling of 161005373120 in words is "one hundred sixty-one billion, five million, three hundred seventy-three thousand, one hundred twenty".