18011226604 has 24 divisors (see below), whose sum is σ = 36027776288. Its totient is φ = 7717956480.

The previous prime is 18011226581. The next prime is 18011226689. The reversal of 18011226604 is 40662211081.

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, 161464 + ... + 249184.

Almost surely, 2^18011226604 is an apocalyptic number.

18011226604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18011226604 is an abundant number, since it is smaller than the sum of its proper divisors (18016549684).

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

18011226604 is a wasteful number, since it uses less digits than its factorization.

18011226604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95065 (or 95063 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

Adding to 18011226604 its reverse (40662211081), we get a palindrome (58673437685).

The spelling of 18011226604 in words is "eighteen billion, eleven million, two hundred twenty-six thousand, six hundred four".