213434543555 has 8 divisors (see below), whose sum is σ = 256847010912. Its totient is φ = 170263929088.

The previous prime is 213434543537. The next prime is 213434543573. The reversal of 213434543555 is 555345434312.

213434543555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (213434543537) and next prime (213434543573).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213434543555 - 2⁸ = 213434543299 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 60461279 + ... + 60464808.

It is an arithmetic number, because the mean of its divisors is an integer number (32105876364).

Almost surely, 2^213434543555 is an apocalyptic number.

213434543555 is a deficient number, since it is larger than the sum of its proper divisors (43412467357).

213434543555 is a wasteful number, since it uses less digits than its factorization.

213434543555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120926445.

The product of its digits is 2160000, while the sum is 44.

Adding to 213434543555 its reverse (555345434312), we get a palindrome (768779977867).

The spelling of 213434543555 in words is "two hundred thirteen billion, four hundred thirty-four million, five hundred forty-three thousand, five hundred fifty-five".