531040020611042 has 16 divisors (see below), whose sum is σ = 797529900000960. Its totient is φ = 265196725988208.

The previous prime is 531040020611033. The next prime is 531040020611047. The reversal of 531040020611042 is 240116020040135.

It is a junction number, because it is equal to n+sod(n) for n = 531040020610996 and 531040020611014.

It is not an unprimeable number, because it can be changed into a prime (531040020611047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205943384 + ... + 208506012.

It is an arithmetic number, because the mean of its divisors is an integer number (49845618750060).

Almost surely, 2^{531040020611042} is an apocalyptic number.

531040020611042 is a deficient number, since it is larger than the sum of its proper divisors (266489879389918).

531040020611042 is a wasteful number, since it uses less digits than its factorization.

531040020611042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688745.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 531040020611042 its reverse (240116020040135), we get a palindrome (771156040651177).

The spelling of 531040020611042 in words is "five hundred thirty-one trillion, forty billion, twenty million, six hundred eleven thousand, forty-two".