19143805450000 has 240 divisors, whose sum is σ = 57800659771008. Its totient is φ = 5966899200000.

The previous prime is 19143805449961. The next prime is 19143805450037. The reversal of 19143805450000 is 5450834191.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1363792 + ... + 6336208.

Almost surely, 2^{19143805450000} is an apocalyptic number.

19143805450000 is a gapful number since it is divisible by the number (10) 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 19143805450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28900329885504).

19143805450000 is an abundant number, since it is smaller than the sum of its proper divisors (38656854321008).

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

19143805450000 is an equidigital number, since it uses as much as digits as its factorization.

19143805450000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972468 (or 4972442 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 19143805450000 in words is "nineteen trillion, one hundred forty-three billion, eight hundred five million, four hundred fifty thousand".