531534340253543 has 16 divisors (see below), whose sum is σ = 581317304864256. Its totient is φ = 481995737509440.

The previous prime is 531534340253509. The next prime is 531534340253549. The reversal of 531534340253543 is 345352043435135.

It is not a de Polignac number, because 531534340253543 - 2⁴⁸ = 250059363542887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 531534340253491 and 531534340253500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531534340253549) 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, 4647821 + ... + 32934342.

It is an arithmetic number, because the mean of its divisors is an integer number (36332331554016).

Almost surely, 2^{531534340253543} is an apocalyptic number.

531534340253543 is a deficient number, since it is larger than the sum of its proper divisors (49782964610713).

531534340253543 is a wasteful number, since it uses less digits than its factorization.

531534340253543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37585414.

The product of its (nonzero) digits is 19440000, while the sum is 50.

Adding to 531534340253543 its reverse (345352043435135), we get a palindrome (876886383688678).

The spelling of 531534340253543 in words is "five hundred thirty-one trillion, five hundred thirty-four billion, three hundred forty million, two hundred fifty-three thousand, five hundred forty-three".