218086773844 has 12 divisors (see below), whose sum is σ = 384397552000. Its totient is φ = 108258901848.

The previous prime is 218086773841. The next prime is 218086773901. The reversal of 218086773844 is 448377680812.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218086773841) 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, 196120644 + ... + 196121755.

Almost surely, 2^218086773844 is an apocalyptic number.

It is an amenable number.

218086773844 is a deficient number, since it is larger than the sum of its proper divisors (166310778156).

218086773844 is a wasteful number, since it uses less digits than its factorization.

218086773844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392242542 (or 392242540 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 58.

The spelling of 218086773844 in words is "two hundred eighteen billion, eighty-six million, seven hundred seventy-three thousand, eight hundred forty-four".