253415521343234 has 24 divisors (see below), whose sum is σ = 398067315419340. Its totient is φ = 120985724275328.

The previous prime is 253415521343213. The next prime is 253415521343279. The reversal of 253415521343234 is 432343125514352.

It can be written as a sum of positive squares in 2 ways, for example, as 248912624611225 + 4502896732009 = 15776965^2 + 2122003^2 .

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 11 ways as a sum of consecutive naturals, for example, 209875307 + ... + 211079310.

Almost surely, 2^{253415521343234} is an apocalyptic number.

253415521343234 is a deficient number, since it is larger than the sum of its proper divisors (144651794076106).

253415521343234 is a wasteful number, since it uses less digits than its factorization.

253415521343234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420955234 (or 420955211 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 47.

Adding to 253415521343234 its reverse (432343125514352), we get a palindrome (685758646857586).

The spelling of 253415521343234 in words is "two hundred fifty-three trillion, four hundred fifteen billion, five hundred twenty-one million, three hundred forty-three thousand, two hundred thirty-four".