505805629609 has 8 divisors (see below), whose sum is σ = 578072211200. Its totient is φ = 433541206656.

The previous prime is 505805629583. The next prime is 505805629643. The reversal of 505805629609 is 906926508505.

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 505805629609 - 2⁷ = 505805629481 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 505805629609.

It is not an unprimeable number, because it can be changed into a prime (505805629699) 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, 1809 + ... + 1005790.

It is an arithmetic number, because the mean of its divisors is an integer number (72259026400).

Almost surely, 2^505805629609 is an apocalyptic number.

It is an amenable number.

505805629609 is a deficient number, since it is larger than the sum of its proper divisors (72266581591).

505805629609 is a wasteful number, since it uses less digits than its factorization.

505805629609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079319.

The product of its (nonzero) digits is 5832000, while the sum is 55.

The spelling of 505805629609 in words is "five hundred five billion, eight hundred five million, six hundred twenty-nine thousand, six hundred nine".