161145024217 has 8 divisors (see below), whose sum is σ = 166706366400. Its totient is φ = 155583989904.

The previous prime is 161145024167. The next prime is 161145024233. The reversal of 161145024217 is 712420541161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161145024217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161145027217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1629534 + ... + 1725592.

It is an arithmetic number, because the mean of its divisors is an integer number (20838295800).

Almost surely, 2^161145024217 is an apocalyptic number.

It is an amenable number.

161145024217 is a deficient number, since it is larger than the sum of its proper divisors (5561342183).

161145024217 is an equidigital number, since it uses as much as digits as its factorization.

161145024217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153935.

The product of its (nonzero) digits is 13440, while the sum is 34.

Adding to 161145024217 its reverse (712420541161), we get a palindrome (873565565378).

The spelling of 161145024217 in words is "one hundred sixty-one billion, one hundred forty-five million, twenty-four thousand, two hundred seventeen".