509708677121 has 8 divisors (see below), whose sum is σ = 601315305984. Its totient is φ = 422799824160.

The previous prime is 509708677097. The next prime is 509708677147. The reversal of 509708677121 is 121776807905.

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

It is a de Polignac number, because none of the positive numbers 2^k-509708677121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509708677151) 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, 1174443740 + ... + 1174444173.

It is an arithmetic number, because the mean of its divisors is an integer number (75164413248).

Almost surely, 2^509708677121 is an apocalyptic number.

It is an amenable number.

509708677121 is a deficient number, since it is larger than the sum of its proper divisors (91606628863).

509708677121 is a wasteful number, since it uses less digits than its factorization.

509708677121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348887951.

The product of its (nonzero) digits is 1481760, while the sum is 53.

The spelling of 509708677121 in words is "five hundred nine billion, seven hundred eight million, six hundred seventy-seven thousand, one hundred twenty-one".