500005611018 has 80 divisors (see below), whose sum is σ = 1128255226560. Its totient is φ = 165499282944.

The previous prime is 500005611011. The next prime is 500005611023. The reversal of 500005611018 is 810116500005.

500005611018 is a `hidden beast` number, since 500 + 0 + 0 + 56 + 1 + 101 + 8 = 666.

It is a super-2 number, since 2×500005611018² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 500005610982 and 500005611000.

It is not an unprimeable number, because it can be changed into a prime (500005611011) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 32128323 + ... + 32143881.

It is an arithmetic number, because the mean of its divisors is an integer number (14103190332).

Almost surely, 2^500005611018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 500005611018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564127613280).

500005611018 is an abundant number, since it is smaller than the sum of its proper divisors (628249615542).

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

500005611018 is a wasteful number, since it uses less digits than its factorization.

500005611018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16953 (or 16944 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The spelling of 500005611018 in words is "five hundred billion, five million, six hundred eleven thousand, eighteen".