213162515253 has 24 divisors (see below), whose sum is σ = 311545185120. Its totient is φ = 140431989600.

The previous prime is 213162515227. The next prime is 213162515297. The reversal of 213162515253 is 352515261312.

213162515253 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 625 + 1 + 5 + 25 + 3 = 666.

It is not a de Polignac number, because 213162515253 - 2⁵ = 213162515221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213162515213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 251218 + ... + 699596.

It is an arithmetic number, because the mean of its divisors is an integer number (12981049380).

Almost surely, 2^213162515253 is an apocalyptic number.

It is an amenable number.

213162515253 is a deficient number, since it is larger than the sum of its proper divisors (98382669867).

213162515253 is a wasteful number, since it uses less digits than its factorization.

213162515253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449009 (or 449006 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

Adding to 213162515253 its reverse (352515261312), we get a palindrome (565677776565).

The spelling of 213162515253 in words is "two hundred thirteen billion, one hundred sixty-two million, five hundred fifteen thousand, two hundred fifty-three".