213852049165 has 4 divisors (see below), whose sum is σ = 256622459004. Its totient is φ = 171081639328.

The previous prime is 213852049111. The next prime is 213852049223. The reversal of 213852049165 is 561940258312.

213852049165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29444500836 + 184407548329 = 171594^2 + 429427^2 .

It is a cyclic number.

It is not a de Polignac number, because 213852049165 - 2¹¹ = 213852047117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21385204912 + ... + 21385204921.

It is an arithmetic number, because the mean of its divisors is an integer number (64155614751).

Almost surely, 2^213852049165 is an apocalyptic number.

It is an amenable number.

213852049165 is a deficient number, since it is larger than the sum of its proper divisors (42770409839).

213852049165 is an equidigital number, since it uses as much as digits as its factorization.

213852049165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42770409838.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 213852049165 in words is "two hundred thirteen billion, eight hundred fifty-two million, forty-nine thousand, one hundred sixty-five".