218726040006 has 48 divisors (see below), whose sum is σ = 477471837024. Its totient is φ = 72360392832.

The previous prime is 218726039993. The next prime is 218726040011. The reversal of 218726040006 is 600040627812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17050911 + ... + 17063733.

It is an arithmetic number, because the mean of its divisors is an integer number (9947329938).

Almost surely, 2^218726040006 is an apocalyptic number.

218726040006 is an abundant number, since it is smaller than the sum of its proper divisors (258745797018).

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

218726040006 is a wasteful number, since it uses less digits than its factorization.

218726040006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19885 (or 19882 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

Adding to 218726040006 its reverse (600040627812), we get a palindrome (818766667818).

The spelling of 218726040006 in words is "two hundred eighteen billion, seven hundred twenty-six million, forty thousand, six".