531884111642 has 16 divisors (see below), whose sum is σ = 867539137920. Its totient is φ = 243101624112.

The previous prime is 531884111621. The next prime is 531884111653. The reversal of 531884111642 is 246111488135.

It is a junction number, because it is equal to n+sod(n) for n = 531884111593 and 531884111602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99303542 + ... + 99308897.

It is an arithmetic number, because the mean of its divisors is an integer number (54221196120).

Almost surely, 2^531884111642 is an apocalyptic number.

531884111642 is a deficient number, since it is larger than the sum of its proper divisors (335655026278).

531884111642 is a wasteful number, since it uses less digits than its factorization.

531884111642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198612557.

The product of its digits is 184320, while the sum is 44.

Adding to 531884111642 its reverse (246111488135), we get a palindrome (777995599777).

The spelling of 531884111642 in words is "five hundred thirty-one billion, eight hundred eighty-four million, one hundred eleven thousand, six hundred forty-two".