253530442543 has 16 divisors (see below), whose sum is σ = 294582145536. Its totient is φ = 213689017440.

The previous prime is 253530442541. The next prime is 253530442547. The reversal of 253530442543 is 345244035352.

It is a cyclic number.

It is not a de Polignac number, because 253530442543 - 2¹ = 253530442541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253530442496 and 253530442505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253530442541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1465080 + ... + 1628962.

It is an arithmetic number, because the mean of its divisors is an integer number (18411384096).

Almost surely, 2^253530442543 is an apocalyptic number.

253530442543 is a deficient number, since it is larger than the sum of its proper divisors (41051702993).

253530442543 is a wasteful number, since it uses less digits than its factorization.

253530442543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167574.

The product of its (nonzero) digits is 864000, while the sum is 40.

Adding to 253530442543 its reverse (345244035352), we get a palindrome (598774477895).

The spelling of 253530442543 in words is "two hundred fifty-three billion, five hundred thirty million, four hundred forty-two thousand, five hundred forty-three".