161144064 has 54 divisors (see below), whose sum is σ = 464624706. Its totient is φ = 53713920.

The previous prime is 161144051. The next prime is 161144099. The reversal of 161144064 is 460441161.

161144064 is a `hidden beast` number, since 1 + 611 + 4 + 40 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 106502400 + 54641664 = 10320^2 + 7392^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32667 + ... + 37274.

Almost surely, 2^161144064 is an apocalyptic number.

It is an amenable number.

161144064 is an abundant number, since it is smaller than the sum of its proper divisors (303480642).

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

161144064 is an equidigital number, since it uses as much as digits as its factorization.

161144064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69963 (or 69946 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 161144064 is about 12694.2531879587. The cubic root of 161144064 is about 544.1743962197.

The spelling of 161144064 in words is "one hundred sixty-one million, one hundred forty-four thousand, sixty-four".