18350352512 has 64 divisors (see below), whose sum is σ = 37467619200. Its totient is φ = 8947405824.

The previous prime is 18350352491. The next prime is 18350352521. The reversal of 18350352512 is 21525305381.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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, 3955058 + ... + 3959694.

It is an arithmetic number, because the mean of its divisors is an integer number (585431550).

Almost surely, 2^18350352512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18350352512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18733809600).

18350352512 is an abundant number, since it is smaller than the sum of its proper divisors (19117266688).

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

18350352512 is an equidigital number, since it uses as much as digits as its factorization.

18350352512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5413 (or 5401 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 18350352512 its reverse (21525305381), we get a palindrome (39875657893).

The spelling of 18350352512 in words is "eighteen billion, three hundred fifty million, three hundred fifty-two thousand, five hundred twelve".