161063265 has 32 divisors (see below), whose sum is σ = 281990016. Its totient is φ = 77852160.

The previous prime is 161063261. The next prime is 161063267. The reversal of 161063265 is 562360161.

It is not a de Polignac number, because 161063265 - 2² = 161063261 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161063261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60237 + ... + 62853.

It is an arithmetic number, because the mean of its divisors is an integer number (8812188).

Almost surely, 2^161063265 is an apocalyptic number.

161063265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161063265 is a deficient number, since it is larger than the sum of its proper divisors (120926751).

161063265 is a wasteful number, since it uses less digits than its factorization.

161063265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 161063265 is about 12691.0702858348. The cubic root of 161063265 is about 544.0834297954.

The spelling of 161063265 in words is "one hundred sixty-one million, sixty-three thousand, two hundred sixty-five".