218056300855918 has 64 divisors (see below), whose sum is σ = 394542814298112. Its totient is φ = 88367148334080.

The previous prime is 218056300855907. The next prime is 218056300855927. The reversal of 218056300855918 is 819558003650812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6112258 + ... + 21759418.

It is an arithmetic number, because the mean of its divisors is an integer number (6164731473408).

Almost surely, 2^{218056300855918} is an apocalyptic number.

218056300855918 is a deficient number, since it is larger than the sum of its proper divisors (176486513442194).

218056300855918 is a wasteful number, since it uses less digits than its factorization.

218056300855918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15647689.

The product of its (nonzero) digits is 20736000, while the sum is 61.

The spelling of 218056300855918 in words is "two hundred eighteen trillion, fifty-six billion, three hundred million, eight hundred fifty-five thousand, nine hundred eighteen".