500438559805 has 4 divisors (see below), whose sum is σ = 600526271772. Its totient is φ = 400350847840.

The previous prime is 500438559791. The next prime is 500438559809. The reversal of 500438559805 is 508955834005.

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

It can be written as a sum of positive squares in 2 ways, for example, as 56854587364 + 443583972441 = 238442^2 + 666021^2 .

It is a de Polignac number, because none of the positive numbers 2^k-500438559805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500438559809) 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, 50043855976 + ... + 50043855985.

It is an arithmetic number, because the mean of its divisors is an integer number (150131567943).

Almost surely, 2^500438559805 is an apocalyptic number.

It is an amenable number.

500438559805 is a deficient number, since it is larger than the sum of its proper divisors (100087711967).

500438559805 is a wasteful number, since it uses less digits than its factorization.

500438559805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100087711966.

The product of its (nonzero) digits is 4320000, while the sum is 52.

The spelling of 500438559805 in words is "five hundred billion, four hundred thirty-eight million, five hundred fifty-nine thousand, eight hundred five".