213006191543 has 4 divisors (see below), whose sum is σ = 215202131760. Its totient is φ = 210810251328.

The previous prime is 213006191467. The next prime is 213006191561. The reversal of 213006191543 is 345191600312.

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

It is a cyclic number.

It is not a de Polignac number, because 213006191543 - 2¹⁶ = 213006126007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213006191143) 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, 1097969963 + ... + 1097970156.

It is an arithmetic number, because the mean of its divisors is an integer number (53800532940).

Almost surely, 2^213006191543 is an apocalyptic number.

213006191543 is a deficient number, since it is larger than the sum of its proper divisors (2195940217).

213006191543 is an equidigital number, since it uses as much as digits as its factorization.

213006191543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195940216.

The product of its (nonzero) digits is 19440, while the sum is 35.

Adding to 213006191543 its reverse (345191600312), we get a palindrome (558197791855).

The spelling of 213006191543 in words is "two hundred thirteen billion, six million, one hundred ninety-one thousand, five hundred forty-three".