213842566183 has 4 divisors (see below), whose sum is σ = 213883782120. Its totient is φ = 213801350248.

The previous prime is 213842566163. The next prime is 213842566199. The reversal of 213842566183 is 381665248312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213842566183 is a prime.

It is a super-2 number, since 2×213842566183² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213842566123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20600185 + ... + 20610562.

It is an arithmetic number, because the mean of its divisors is an integer number (53470945530).

Almost surely, 2^213842566183 is an apocalyptic number.

213842566183 is a deficient number, since it is larger than the sum of its proper divisors (41215937).

213842566183 is an equidigital number, since it uses as much as digits as its factorization.

213842566183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41215936.

The product of its digits is 1658880, while the sum is 49.

The spelling of 213842566183 in words is "two hundred thirteen billion, eight hundred forty-two million, five hundred sixty-six thousand, one hundred eighty-three".