509060208861 has 6 divisors (see below), whose sum is σ = 735309190590. Its totient is φ = 339373472568.

The previous prime is 509060208763. The next prime is 509060208863. The reversal of 509060208861 is 168802060905.

509060208861 is a `hidden beast` number, since 509 + 0 + 6 + 0 + 2 + 0 + 88 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 309725640900 + 199334567961 = 556530^2 + 446469^2 .

It is not a de Polignac number, because 509060208861 - 2²³ = 509051820253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509060208863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28281122706 + ... + 28281122723.

It is an arithmetic number, because the mean of its divisors is an integer number (122551531765).

Almost surely, 2^509060208861 is an apocalyptic number.

It is an amenable number.

509060208861 is a deficient number, since it is larger than the sum of its proper divisors (226248981729).

509060208861 is a wasteful number, since it uses less digits than its factorization.

509060208861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56562245435 (or 56562245432 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 509060208861 in words is "five hundred nine billion, sixty million, two hundred eight thousand, eight hundred sixty-one".