509127314138 has 16 divisors (see below), whose sum is σ = 765068115240. Its totient is φ = 254105011200.

The previous prime is 509127314099. The next prime is 509127314159. The reversal of 509127314138 is 831413721905.

It can be written as a sum of positive squares in 4 ways, for example, as 272282545249 + 236844768889 = 521807^2 + 486667^2 .

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, 2462018 + ... + 2660786.

Almost surely, 2^509127314138 is an apocalyptic number.

509127314138 is a deficient number, since it is larger than the sum of its proper divisors (255940801102).

509127314138 is a wasteful number, since it uses less digits than its factorization.

509127314138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201073.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 509127314138 in words is "five hundred nine billion, one hundred twenty-seven million, three hundred fourteen thousand, one hundred thirty-eight".