253353501543 has 4 divisors (see below), whose sum is σ = 337804668728. Its totient is φ = 168902334360.

The previous prime is 253353501497. The next prime is 253353501613. The reversal of 253353501543 is 345105353352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253353501543 - 2⁹ = 253353501031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253353501943) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 42225583588 + ... + 42225583593.

It is an arithmetic number, because the mean of its divisors is an integer number (84451167182).

Almost surely, 2^253353501543 is an apocalyptic number.

253353501543 is a deficient number, since it is larger than the sum of its proper divisors (84451167185).

253353501543 is an equidigital number, since it uses as much as digits as its factorization.

253353501543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84451167184.

The product of its (nonzero) digits is 405000, while the sum is 39.

Adding to 253353501543 its reverse (345105353352), we get a palindrome (598458854895).

The spelling of 253353501543 in words is "two hundred fifty-three billion, three hundred fifty-three million, five hundred one thousand, five hundred forty-three".