18115704236448 has 432 divisors, whose sum is σ = 63795516744960. Its totient is φ = 4774607824896.

The previous prime is 18115704236429. The next prime is 18115704236453. The reversal of 18115704236448 is 84463240751181.

It is a happy number.

18115704236448 is a `hidden beast` number, since 1 + 8 + 1 + 1 + 570 + 4 + 2 + 3 + 64 + 4 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18115704236394 and 18115704236403.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 539317638 + ... + 539351226.

It is an arithmetic number, because the mean of its divisors is an integer number (147674807280).

Almost surely, 2^{18115704236448} is an apocalyptic number.

18115704236448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18115704236448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31897758372480).

18115704236448 is an abundant number, since it is smaller than the sum of its proper divisors (45679812508512).

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

18115704236448 is a wasteful number, since it uses less digits than its factorization.

18115704236448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35221 (or 35197 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 18115704236448 in words is "eighteen trillion, one hundred fifteen billion, seven hundred four million, two hundred thirty-six thousand, four hundred forty-eight".