213504042233506 has 32 divisors (see below), whose sum is σ = 323665898633280. Its totient is φ = 105620782291200.

The previous prime is 213504042233473. The next prime is 213504042233591. The reversal of 213504042233506 is 605332240405312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301748350 + ... + 302455078.

It is an arithmetic number, because the mean of its divisors is an integer number (10114559332290).

Almost surely, 2^{213504042233506} is an apocalyptic number.

213504042233506 is a deficient number, since it is larger than the sum of its proper divisors (110161856399774).

213504042233506 is a wasteful number, since it uses less digits than its factorization.

213504042233506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710530.

The product of its (nonzero) digits is 518400, while the sum is 40.

Adding to 213504042233506 its reverse (605332240405312), we get a palindrome (818836282638818).

The spelling of 213504042233506 in words is "two hundred thirteen trillion, five hundred four billion, forty-two million, two hundred thirty-three thousand, five hundred six".