165065840801 has 8 divisors (see below), whose sum is σ = 172855586304. Its totient is φ = 157327176160.

The previous prime is 165065840783. The next prime is 165065840861. The reversal of 165065840801 is 108048560561.

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-165065840801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165065840861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12763601 + ... + 12776526.

It is an arithmetic number, because the mean of its divisors is an integer number (21606948288).

Almost surely, 2^165065840801 is an apocalyptic number.

It is an amenable number.

165065840801 is a deficient number, since it is larger than the sum of its proper divisors (7789745503).

165065840801 is a wasteful number, since it uses less digits than its factorization.

165065840801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25540431.

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 165065840801 in words is "one hundred sixty-five billion, sixty-five million, eight hundred forty thousand, eight hundred one".