218154607028 has 24 divisors (see below), whose sum is σ = 394105146624. Its totient is φ = 105553483200.

The previous prime is 218154607007. The next prime is 218154607061. The reversal of 218154607028 is 820706451812.

It is a super-2 number, since 2×218154607028² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 218154607028.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4003808 + ... + 4057928.

It is an arithmetic number, because the mean of its divisors is an integer number (16421047776).

Almost surely, 2^218154607028 is an apocalyptic number.

It is an amenable number.

218154607028 is a deficient number, since it is larger than the sum of its proper divisors (175950539596).

218154607028 is a wasteful number, since it uses less digits than its factorization.

218154607028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86663 (or 86661 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 218154607028 in words is "two hundred eighteen billion, one hundred fifty-four million, six hundred seven thousand, twenty-eight".