253130320345 has 24 divisors (see below), whose sum is σ = 353483659584. Its totient is φ = 173509058016.

The previous prime is 253130320343. The next prime is 253130320349. The reversal of 253130320345 is 543023031352.

It is not a de Polignac number, because 253130320345 - 2¹ = 253130320343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253130320343) 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, 453354 + ... + 843676.

It is an arithmetic number, because the mean of its divisors is an integer number (14728485816).

Almost surely, 2^253130320345 is an apocalyptic number.

It is an amenable number.

253130320345 is a deficient number, since it is larger than the sum of its proper divisors (100353339239).

253130320345 is a wasteful number, since it uses less digits than its factorization.

253130320345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392989 (or 392982 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 253130320345 its reverse (543023031352), we get a palindrome (796153351697).

The spelling of 253130320345 in words is "two hundred fifty-three billion, one hundred thirty million, three hundred twenty thousand, three hundred forty-five".