506431641140 has 12 divisors (see below), whose sum is σ = 1063506446436. Its totient is φ = 202572656448.

The previous prime is 506431641139. The next prime is 506431641167. The reversal of 506431641140 is 41146134605.

It can be written as a sum of positive squares in 2 ways, for example, as 377283406756 + 129148234384 = 614234^2 + 359372^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 506431641140.

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, 12660791009 + ... + 12660791048.

It is an arithmetic number, because the mean of its divisors is an integer number (88625537203).

Almost surely, 2^506431641140 is an apocalyptic number.

It is an amenable number.

506431641140 is an abundant number, since it is smaller than the sum of its proper divisors (557074805296).

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

506431641140 is a wasteful number, since it uses less digits than its factorization.

506431641140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25321582066 (or 25321582064 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 506431641140 its reverse (41146134605), we get a palindrome (547577775745).

The spelling of 506431641140 in words is "five hundred six billion, four hundred thirty-one million, six hundred forty-one thousand, one hundred forty".