165120412212065 has 16 divisors (see below), whose sum is σ = 198279037382400. Its totient is φ = 132006644635392.

The previous prime is 165120412212031. The next prime is 165120412212083. The reversal of 165120412212065 is 560212214021561.

165120412212065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 165120412212065 - 2²⁴ = 165120395434849 is a prime.

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, 133185224 + ... + 134419286.

It is an arithmetic number, because the mean of its divisors is an integer number (12392439836400).

Almost surely, 2^{165120412212065} is an apocalyptic number.

It is an amenable number.

165120412212065 is a deficient number, since it is larger than the sum of its proper divisors (33158625170335).

165120412212065 is a wasteful number, since it uses less digits than its factorization.

165120412212065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252216.

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 165120412212065 in words is "one hundred sixty-five trillion, one hundred twenty billion, four hundred twelve million, two hundred twelve thousand, sixty-five".