253430430544 has 20 divisors (see below), whose sum is σ = 491036939680. Its totient is φ = 126711220320.

The previous prime is 253430430541. The next prime is 253430430553. The reversal of 253430430544 is 445034034352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253430430541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311959 + ... + 777289.

It is an arithmetic number, because the mean of its divisors is an integer number (24551846984).

Almost surely, 2^253430430544 is an apocalyptic number.

It is an amenable number.

253430430544 is a deficient number, since it is larger than the sum of its proper divisors (237606509136).

253430430544 is a wasteful number, since it uses less digits than its factorization.

253430430544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499378 (or 499372 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 37.

Adding to 253430430544 its reverse (445034034352), we get a palindrome (698464464896).

The spelling of 253430430544 in words is "two hundred fifty-three billion, four hundred thirty million, four hundred thirty thousand, five hundred forty-four".