509729825790 has 24 divisors (see below), whose sum is σ = 1325297547288. Its totient is φ = 135927953520.

The previous prime is 509729825777. The next prime is 509729825819. The reversal of 509729825790 is 97528927905.

509729825790 is a `hidden beast` number, since 5 + 0 + 9 + 7 + 298 + 257 + 90 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2831832276 + ... + 2831832455.

It is an arithmetic number, because the mean of its divisors is an integer number (55220731137).

Almost surely, 2^509729825790 is an apocalyptic number.

509729825790 is an abundant number, since it is smaller than the sum of its proper divisors (815567721498).

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

509729825790 is a wasteful number, since it uses less digits than its factorization.

509729825790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663664744 (or 5663664741 counting only the distinct ones).

The product of its (nonzero) digits is 28576800, while the sum is 63.

The spelling of 509729825790 in words is "five hundred nine billion, seven hundred twenty-nine million, eight hundred twenty-five thousand, seven hundred ninety".