213233534555 has 16 divisors (see below), whose sum is σ = 257862528000. Its totient is φ = 169265597280.

The previous prime is 213233534387. The next prime is 213233534557. The reversal of 213233534555 is 555435332312.

It is not a de Polignac number, because 213233534555 - 2⁸ = 213233534299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213233534557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9944636 + ... + 9966054.

It is an arithmetic number, because the mean of its divisors is an integer number (16116408000).

Almost surely, 2^213233534555 is an apocalyptic number.

213233534555 is a deficient number, since it is larger than the sum of its proper divisors (44628993445).

213233534555 is a wasteful number, since it uses less digits than its factorization.

213233534555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36754.

The product of its digits is 810000, while the sum is 41.

Adding to 213233534555 its reverse (555435332312), we get a palindrome (768668866867).

The spelling of 213233534555 in words is "two hundred thirteen billion, two hundred thirty-three million, five hundred thirty-four thousand, five hundred fifty-five".