531045137240 has 16 divisors (see below), whose sum is σ = 1194851558880. Its totient is φ = 212418054880.

The previous prime is 531045137213. The next prime is 531045137251. The reversal of 531045137240 is 42731540135.

It is a self number, because there is not a number n which added to its sum of digits gives 531045137240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6638064176 + ... + 6638064255.

It is an arithmetic number, because the mean of its divisors is an integer number (74678222430).

Almost surely, 2^531045137240 is an apocalyptic number.

It is an amenable number.

531045137240 is an abundant number, since it is smaller than the sum of its proper divisors (663806421640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531045137240 is a wasteful number, since it uses less digits than its factorization.

531045137240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13276128442 (or 13276128438 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

Adding to 531045137240 its reverse (42731540135), we get a palindrome (573776677375).

The spelling of 531045137240 in words is "five hundred thirty-one billion, forty-five million, one hundred thirty-seven thousand, two hundred forty".