213454042430505 has 8 divisors (see below), whose sum is σ = 341526467888832. Its totient is φ = 113842155962928.

The previous prime is 213454042430477. The next prime is 213454042430513. The reversal of 213454042430505 is 505034240454312.

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

It is not a de Polignac number, because 213454042430505 - 2⁶ = 213454042430441 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7115134747669 + ... + 7115134747698.

It is an arithmetic number, because the mean of its divisors is an integer number (42690808486104).

Almost surely, 2^{213454042430505} is an apocalyptic number.

It is an amenable number.

213454042430505 is a deficient number, since it is larger than the sum of its proper divisors (128072425458327).

213454042430505 is a wasteful number, since it uses less digits than its factorization.

213454042430505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14230269495375.

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 213454042430505 its reverse (505034240454312), we get a palindrome (718488282884817).

The spelling of 213454042430505 in words is "two hundred thirteen trillion, four hundred fifty-four billion, forty-two million, four hundred thirty thousand, five hundred five".