505684069859 has 4 divisors (see below), whose sum is σ = 505835884680. Its totient is φ = 505532255040.

The previous prime is 505684069823. The next prime is 505684069867. The reversal of 505684069859 is 958960486505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505684069859 - 2⁸ = 505684069603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505684069795 and 505684069804.

It is not an unprimeable number, because it can be changed into a prime (505684069879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75902414 + ... + 75909075.

It is an arithmetic number, because the mean of its divisors is an integer number (126458971170).

Almost surely, 2^505684069859 is an apocalyptic number.

505684069859 is a deficient number, since it is larger than the sum of its proper divisors (151814821).

505684069859 is a wasteful number, since it uses less digits than its factorization.

505684069859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151814820.

The product of its (nonzero) digits is 93312000, while the sum is 65.

The spelling of 505684069859 in words is "five hundred five billion, six hundred eighty-four million, sixty-nine thousand, eight hundred fifty-nine".