509146863655 has 8 divisors (see below), whose sum is σ = 611669744784. Its totient is φ = 406855152000.

The previous prime is 509146863623. The next prime is 509146863689. The reversal of 509146863655 is 556368641905.

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

It is not a de Polignac number, because 509146863655 - 2⁵ = 509146863623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 509146863655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57787521 + ... + 57796330.

It is an arithmetic number, because the mean of its divisors is an integer number (76458718098).

Almost surely, 2^509146863655 is an apocalyptic number.

509146863655 is a deficient number, since it is larger than the sum of its proper divisors (102522881129).

509146863655 is a wasteful number, since it uses less digits than its factorization.

509146863655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115584737.

The product of its (nonzero) digits is 23328000, while the sum is 58.

The spelling of 509146863655 in words is "five hundred nine billion, one hundred forty-six million, eight hundred sixty-three thousand, six hundred fifty-five".