18342253512 has 108 divisors (see below), whose sum is σ = 54641232555. Its totient is φ = 5554428000.

The previous prime is 18342253499. The next prime is 18342253561. The reversal of 18342253512 is 21535224381.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

18342253512 is a `hidden beast` number, since 1 + 83 + 4 + 225 + 351 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9171126756 + 9171126756 = 95766^2 + 95766^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=95766.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12640387 + ... + 12641837.

Almost surely, 2^18342253512 is an apocalyptic number.

18342253512 is a gapful number since it is divisible by the number (12) 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 18342253512

18342253512 is an abundant number, since it is smaller than the sum of its proper divisors (36298979043).

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

18342253512 is a wasteful number, since it uses less digits than its factorization.

18342253512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936 (or 1467 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 18342253512 its reverse (21535224381), we get a palindrome (39877477893).

The spelling of 18342253512 in words is "eighteen billion, three hundred forty-two million, two hundred fifty-three thousand, five hundred twelve".