500043718636 has 144 divisors (see below), whose sum is σ = 1109054092608. Its totient is φ = 193096189440.

The previous prime is 500043718633. The next prime is 500043718693. The reversal of 500043718636 is 636817340005.

It is a junction number, because it is equal to n+sod(n) for n = 500043718592 and 500043718601.

It is not an unprimeable number, because it can be changed into a prime (500043718633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 195557470 + ... + 195560026.

It is an arithmetic number, because the mean of its divisors is an integer number (7701764532).

Almost surely, 2^500043718636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 500043718636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554527046304).

500043718636 is an abundant number, since it is smaller than the sum of its proper divisors (609010373972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

500043718636 is a wasteful number, since it uses less digits than its factorization.

500043718636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080 (or 3067 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 500043718636 in words is "five hundred billion, forty-three million, seven hundred eighteen thousand, six hundred thirty-six".