19287008240640 has 704 divisors, whose sum is σ = 74393595002880. Its totient is φ = 4169359687680.

The previous prime is 19287008240567. The next prime is 19287008240641. The reversal of 19287008240640 is 4604280078291.

It is not an unprimeable number, because it can be changed into a prime (19287008240641) 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, 220049625 + ... + 220137255.

Almost surely, 2^{19287008240640} is an apocalyptic number.

19287008240640 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 19287008240640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37196797501440).

19287008240640 is an abundant number, since it is smaller than the sum of its proper divisors (55106586762240).

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

19287008240640 is a wasteful number, since it uses less digits than its factorization.

19287008240640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87778 (or 87760 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 19287008240640 in words is "nineteen trillion, two hundred eighty-seven billion, eight million, two hundred forty thousand, six hundred forty".