505807800305 has 16 divisors (see below), whose sum is σ = 626691523584. Its totient is φ = 391504069440.

The previous prime is 505807800301. The next prime is 505807800307. The reversal of 505807800305 is 503008708505.

It is not a de Polignac number, because 505807800305 - 2² = 505807800301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505807800301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316667 + ... + 1054463.

It is an arithmetic number, because the mean of its divisors is an integer number (39168220224).

Almost surely, 2^505807800305 is an apocalyptic number.

It is an amenable number.

505807800305 is a deficient number, since it is larger than the sum of its proper divisors (120883723279).

505807800305 is a wasteful number, since it uses less digits than its factorization.

505807800305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742256.

The product of its (nonzero) digits is 168000, while the sum is 41.

The spelling of 505807800305 in words is "five hundred five billion, eight hundred seven million, eight hundred thousand, three hundred five".