509946899587 has 2 divisors, whose sum is σ = 509946899588. Its totient is φ = 509946899586.

The previous prime is 509946899549. The next prime is 509946899611. The reversal of 509946899587 is 785998649905.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509946899587 - 2¹⁹ = 509946375299 is a prime.

It is a super-3 number, since 3×509946899587³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (509946899087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254973449793 + 254973449794.

It is an arithmetic number, because the mean of its divisors is an integer number (254973449794).

Almost surely, 2^509946899587 is an apocalyptic number.

509946899587 is a deficient number, since it is larger than the sum of its proper divisors (1).

509946899587 is an equidigital number, since it uses as much as digits as its factorization.

509946899587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1763596800, while the sum is 79.

The spelling of 509946899587 in words is "five hundred nine billion, nine hundred forty-six million, eight hundred ninety-nine thousand, five hundred eighty-seven".