165041194220868 has 288 divisors, whose sum is σ = 468947553308416. Its totient is φ = 44245580341248.

The previous prime is 165041194220821. The next prime is 165041194220887. The reversal of 165041194220868 is 868022491140561.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25799777046 + ... + 25799783442.

Almost surely, 2^{165041194220868} 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 165041194220868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234473776654208).

165041194220868 is an abundant number, since it is smaller than the sum of its proper divisors (303906359087548).

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

165041194220868 is a wasteful number, since it uses less digits than its factorization.

165041194220868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9519 (or 9500 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 57.

The spelling of 165041194220868 in words is "one hundred sixty-five trillion, forty-one billion, one hundred ninety-four million, two hundred twenty thousand, eight hundred sixty-eight".