161016352 has 72 divisors (see below), whose sum is σ = 381579660. Its totient is φ = 66608640.

The previous prime is 161016301. The next prime is 161016371. The reversal of 161016352 is 253610161.

It can be written as a sum of positive squares in 2 ways, for example, as 160883856 + 132496 = 12684^2 + 364^2 .

It is a super-2 number, since 2×161016352² = 51852531222775808, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43702 + ... + 47242.

Almost surely, 2^161016352 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 161016352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190789830).

161016352 is an abundant number, since it is smaller than the sum of its proper divisors (220563308).

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

161016352 is a wasteful number, since it uses less digits than its factorization.

161016352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3594 (or 3579 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 161016352 is about 12689.2218831574. The cubic root of 161016352 is about 544.0305994898.

The spelling of 161016352 in words is "one hundred sixty-one million, sixteen thousand, three hundred fifty-two".