165487336817 has 16 divisors (see below), whose sum is σ = 183285024000. Its totient is φ = 148149991440.

The previous prime is 165487336799. The next prime is 165487336829. The reversal of 165487336817 is 718633784561.

165487336817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165487336817 - 2²⁴ = 165470559601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165487336877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2367434 + ... + 2436332.

It is an arithmetic number, because the mean of its divisors is an integer number (11455314000).

Almost surely, 2^165487336817 is an apocalyptic number.

It is an amenable number.

165487336817 is a deficient number, since it is larger than the sum of its proper divisors (17797687183).

165487336817 is a wasteful number, since it uses less digits than its factorization.

165487336817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72236.

The product of its digits is 20321280, while the sum is 59.

The spelling of 165487336817 in words is "one hundred sixty-five billion, four hundred eighty-seven million, three hundred thirty-six thousand, eight hundred seventeen".