161065265200 has 60 divisors (see below), whose sum is σ = 442239207280. Its totient is φ = 55222375680.

The previous prime is 161065265197. The next prime is 161065265201. The reversal of 161065265200 is 2562560161.

It is not an unprimeable number, because it can be changed into a prime (161065265201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28758855 + ... + 28764454.

Almost surely, 2^161065265200 is an apocalyptic number.

161065265200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161065265200 is an abundant number, since it is smaller than the sum of its proper divisors (281173942080).

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

161065265200 is a wasteful number, since it uses less digits than its factorization.

161065265200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57523334 (or 57523323 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 161065265200 in words is "one hundred sixty-one billion, sixty-five million, two hundred sixty-five thousand, two hundred".