213151535505 has 64 divisors (see below), whose sum is σ = 386313546240. Its totient is φ = 111470112000.

The previous prime is 213151535483. The next prime is 213151535539. The reversal of 213151535505 is 505535151312.

213151535505 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 51 + 53 + 550 + 5 = 666.

It is not a de Polignac number, because 213151535505 - 2⁸ = 213151535249 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 213151535505.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13593820 + ... + 13609490.

It is an arithmetic number, because the mean of its divisors is an integer number (6036149160).

Almost surely, 2^213151535505 is an apocalyptic number.

It is an amenable number.

213151535505 is a deficient number, since it is larger than the sum of its proper divisors (173162010735).

213151535505 is a wasteful number, since it uses less digits than its factorization.

213151535505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17639 (or 17633 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 36.

Adding to 213151535505 its reverse (505535151312), we get a palindrome (718686686817).

The spelling of 213151535505 in words is "two hundred thirteen billion, one hundred fifty-one million, five hundred thirty-five thousand, five hundred five".