18519875712 has 192 divisors, whose sum is σ = 58729070400. Its totient is φ = 5565708288.

The previous prime is 18519875677. The next prime is 18519875713. The reversal of 18519875712 is 21757891581.

18519875712 is a `hidden beast` number, since 18 + 51 + 9 + 8 + 7 + 571 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (18519875713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 629589 + ... + 658347.

It is an arithmetic number, because the mean of its divisors is an integer number (305880575).

Almost surely, 2^18519875712 is an apocalyptic number.

18519875712 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 18519875712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29364535200).

18519875712 is an abundant number, since it is smaller than the sum of its proper divisors (40209194688).

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

18519875712 is a wasteful number, since it uses less digits than its factorization.

18519875712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28835 (or 28820 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 54.

The spelling of 18519875712 in words is "eighteen billion, five hundred nineteen million, eight hundred seventy-five thousand, seven hundred twelve".