165648578368 has 168 divisors, whose sum is σ = 425075933184. Its totient is φ = 63416908800.

The previous prime is 165648578281. The next prime is 165648578383. The reversal of 165648578368 is 863875846561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1198273 + ... + 1329343.

It is an arithmetic number, because the mean of its divisors is an integer number (2530213888).

Almost surely, 2^165648578368 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 165648578368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212537966592).

165648578368 is an abundant number, since it is smaller than the sum of its proper divisors (259427354816).

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

165648578368 is a wasteful number, since it uses less digits than its factorization.

165648578368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131141 (or 131124 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 67.

The spelling of 165648578368 in words is "one hundred sixty-five billion, six hundred forty-eight million, five hundred seventy-eight thousand, three hundred sixty-eight".