18678701124 has 36 divisors (see below), whose sum is σ = 47227736556. Its totient is φ = 6224634048.

The previous prime is 18678701117. The next prime is 18678701191. The reversal of 18678701124 is 42110787681.

It can be written as a sum of positive squares in 2 ways, for example, as 11627740224 + 7050960900 = 107832^2 + 83970^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18678701124.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79822 + ... + 209114.

It is an arithmetic number, because the mean of its divisors is an integer number (1311881571).

Almost surely, 2^18678701124 is an apocalyptic number.

It is an amenable number.

18678701124 is an abundant number, since it is smaller than the sum of its proper divisors (28549035432).

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

18678701124 is a wasteful number, since it uses less digits than its factorization.

18678701124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133316 (or 133311 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The spelling of 18678701124 in words is "eighteen billion, six hundred seventy-eight million, seven hundred one thousand, one hundred twenty-four".