509131808041 has 8 divisors (see below), whose sum is σ = 548405650944. Its totient is φ = 471286104960.

The previous prime is 509131808023. The next prime is 509131808093. The reversal of 509131808041 is 140808131905.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 509131808041 - 2¹⁹ = 509131283753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 509131807985 and 509131808003.

It is not an unprimeable number, because it can be changed into a prime (509131808641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357034216 + ... + 357035641.

It is an arithmetic number, because the mean of its divisors is an integer number (68550706368).

Almost surely, 2^509131808041 is an apocalyptic number.

It is an amenable number.

509131808041 is a deficient number, since it is larger than the sum of its proper divisors (39273842903).

509131808041 is a wasteful number, since it uses less digits than its factorization.

509131808041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714069911.

The product of its (nonzero) digits is 34560, while the sum is 40.

Adding to 509131808041 its reverse (140808131905), we get a palindrome (649939939946).

The spelling of 509131808041 in words is "five hundred nine billion, one hundred thirty-one million, eight hundred eight thousand, forty-one".