500010000040 has 64 divisors (see below), whose sum is σ = 1166818014720. Its totient is φ = 192634848000.

The previous prime is 500009999987. The next prime is 500010000047. The reversal of 500010000040 is 40000010005.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 500009999981 and 500010000026.

It is not an unprimeable number, because it can be changed into a prime (500010000047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693891 + ... + 1217170.

It is an arithmetic number, because the mean of its divisors is an integer number (18231531480).

Almost surely, 2^500010000040 is an apocalyptic number.

It is an amenable number.

500010000040 is an abundant number, since it is smaller than the sum of its proper divisors (666808014680).

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

500010000040 is a wasteful number, since it uses less digits than its factorization.

500010000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911314 (or 1911310 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

Adding to 500010000040 its reverse (40000010005), we get a palindrome (540010010045).

The spelling of 500010000040 in words is "five hundred billion, ten million, forty", and thus it is an aban number.