509708677123 has 8 divisors (see below), whose sum is σ = 511547821776. Its totient is φ = 507869712000.

The previous prime is 509708677097. The next prime is 509708677147. The reversal of 509708677123 is 321776807905.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 509708677123 - 2⁹ = 509708676611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509708677193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8691048 + ... + 8749498.

It is an arithmetic number, because the mean of its divisors is an integer number (63943477722).

Almost surely, 2^509708677123 is an apocalyptic number.

509708677123 is a deficient number, since it is larger than the sum of its proper divisors (1839144653).

509708677123 is a wasteful number, since it uses less digits than its factorization.

509708677123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89765.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 509708677123 in words is "five hundred nine billion, seven hundred eight million, six hundred seventy-seven thousand, one hundred twenty-three".