218056498018 has 8 divisors (see below), whose sum is σ = 327433826412. Its totient is φ = 108911889216.

The previous prime is 218056498013. The next prime is 218056498111. The reversal of 218056498018 is 810894650812.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 215772327169 + 2284170849 = 464513^2 + 47793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (218056498013) 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, 58177555 + ... + 58181302.

Almost surely, 2^218056498018 is an apocalyptic number.

218056498018 is a deficient number, since it is larger than the sum of its proper divisors (109377328394).

218056498018 is a wasteful number, since it uses less digits than its factorization.

218056498018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116359796.

The product of its (nonzero) digits is 1105920, while the sum is 52.

The spelling of 218056498018 in words is "two hundred eighteen billion, fifty-six million, four hundred ninety-eight thousand, eighteen".