19412543840340 has 192 divisors, whose sum is σ = 64291420569600. Its totient is φ = 4282200513024.

The previous prime is 19412543840279. The next prime is 19412543840341. The reversal of 19412543840340 is 4304834521491.

It is a super-2 number, since 2×19412543840340² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19412543840340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19412543840341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26520181 + ... + 27242339.

It is an arithmetic number, because the mean of its divisors is an integer number (334851148800).

Almost surely, 2^{19412543840340} is an apocalyptic number.

19412543840340 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 19412543840340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32145710284800).

19412543840340 is an abundant number, since it is smaller than the sum of its proper divisors (44878876729260).

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

19412543840340 is a wasteful number, since it uses less digits than its factorization.

19412543840340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724414 (or 724412 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 19412543840340 in words is "nineteen trillion, four hundred twelve billion, five hundred forty-three million, eight hundred forty thousand, three hundred forty".