218554857548 has 12 divisors (see below), whose sum is σ = 384681816960. Its totient is φ = 108645766992.

The previous prime is 218554857539. The next prime is 218554857559. The reversal of 218554857548 is 845758455812.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157914668 + ... + 157916051.

It is an arithmetic number, because the mean of its divisors is an integer number (32056818080).

Almost surely, 2^218554857548 is an apocalyptic number.

It is an amenable number.

218554857548 is a deficient number, since it is larger than the sum of its proper divisors (166126959412).

218554857548 is a wasteful number, since it uses less digits than its factorization.

218554857548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315830896 (or 315830894 counting only the distinct ones).

The product of its digits is 71680000, while the sum is 62.

The spelling of 218554857548 in words is "two hundred eighteen billion, five hundred fifty-four million, eight hundred fifty-seven thousand, five hundred forty-eight".