509708677087 has 2 divisors, whose sum is σ = 509708677088. Its totient is φ = 509708677086.

The previous prime is 509708677061. The next prime is 509708677097. The reversal of 509708677087 is 780776807905.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509708677087 - 2⁷ = 509708676959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509708677097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254854338543 + 254854338544.

It is an arithmetic number, because the mean of its divisors is an integer number (254854338544).

Almost surely, 2^509708677087 is an apocalyptic number.

509708677087 is a deficient number, since it is larger than the sum of its proper divisors (1).

509708677087 is an equidigital number, since it uses as much as digits as its factorization.

509708677087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41489280, while the sum is 64.

The spelling of 509708677087 in words is "five hundred nine billion, seven hundred eight million, six hundred seventy-seven thousand, eighty-seven".