218220094986 has 16 divisors (see below), whose sum is σ = 437982384864. Its totient is φ = 72482999184.

The previous prime is 218220094973. The next prime is 218220095017. The reversal of 218220094986 is 689490022812.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64256281 + ... + 64259676.

It is an arithmetic number, because the mean of its divisors is an integer number (27373899054).

Almost surely, 2^218220094986 is an apocalyptic number.

218220094986 is an abundant number, since it is smaller than the sum of its proper divisors (219762289878).

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

218220094986 is a wasteful number, since it uses less digits than its factorization.

218220094986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128516245.

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 218220094986 in words is "two hundred eighteen billion, two hundred twenty million, ninety-four thousand, nine hundred eighty-six".