165641314224 has 80 divisors (see below), whose sum is σ = 444562840800. Its totient is φ = 53080946688.

The previous prime is 165641314217. The next prime is 165641314243. The reversal of 165641314224 is 422413146561.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68982 + ... + 579690.

It is an arithmetic number, because the mean of its divisors is an integer number (5557035510).

Almost surely, 2^165641314224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165641314224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222281420400).

165641314224 is an abundant number, since it is smaller than the sum of its proper divisors (278921526576).

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

165641314224 is a wasteful number, since it uses less digits than its factorization.

165641314224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510982 (or 510976 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The spelling of 165641314224 in words is "one hundred sixty-five billion, six hundred forty-one million, three hundred fourteen thousand, two hundred twenty-four".