18351662632228 has 12 divisors (see below), whose sum is σ = 32118383606400. Its totient is φ = 9174981601832.

The previous prime is 18351662632213. The next prime is 18351662632241. The reversal of 18351662632228 is 82223626615381.

It is a super-2 number, since 2×18351662632228² (a number of 27 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 212379976 + ... + 212466367.

It is an arithmetic number, because the mean of its divisors is an integer number (2676531967200).

Almost surely, 2^{18351662632228} is an apocalyptic number.

It is an amenable number.

18351662632228 is a deficient number, since it is larger than the sum of its proper divisors (13766720974172).

18351662632228 is a wasteful number, since it uses less digits than its factorization.

18351662632228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424857146 (or 424857144 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 55.

The spelling of 18351662632228 in words is "eighteen trillion, three hundred fifty-one billion, six hundred sixty-two million, six hundred thirty-two thousand, two hundred twenty-eight".