18453752512 has 56 divisors (see below), whose sum is σ = 39700962000. Its totient is φ = 8459897856.

The previous prime is 18453752503. The next prime is 18453752519. The reversal of 18453752512 is 21525735481.

It is not an unprimeable number, because it can be changed into a prime (18453752519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49539 + ... + 198397.

It is an arithmetic number, because the mean of its divisors is an integer number (708945750).

Almost surely, 2^18453752512 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 18453752512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19850481000).

18453752512 is an abundant number, since it is smaller than the sum of its proper divisors (21247209488).

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

18453752512 is a wasteful number, since it uses less digits than its factorization.

18453752512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149033 (or 149023 counting only the distinct ones).

The product of its digits is 336000, while the sum is 43.

The spelling of 18453752512 in words is "eighteen billion, four hundred fifty-three million, seven hundred fifty-two thousand, five hundred twelve".