161761152 has 96 divisors (see below), whose sum is σ = 499887720. Its totient is φ = 46212096.

The previous prime is 161761129. The next prime is 161761181. The reversal of 161761152 is 251167161.

161761152 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14518 + ... + 23114.

Almost surely, 2^161761152 is an apocalyptic number.

161761152 is a gapful number since it is divisible by the number (12) 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 161761152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249943860).

161761152 is an abundant number, since it is smaller than the sum of its proper divisors (338126568).

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

161761152 is an equidigital number, since it uses as much as digits as its factorization.

161761152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8628 (or 8609 counting only the distinct ones).

The product of its digits is 2520, while the sum is 30.

The square root of 161761152 is about 12718.5357647805. The cubic root of 161761152 is about 544.8681351989.

The spelling of 161761152 in words is "one hundred sixty-one million, seven hundred sixty-one thousand, one hundred fifty-two".