19884135040 has 256 divisors, whose sum is σ = 60110346240. Its totient is φ = 6109286400.

The previous prime is 19884134993. The next prime is 19884135083. The reversal of 19884135040 is 4053148891.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3496039 + ... + 3501721.

It is an arithmetic number, because the mean of its divisors is an integer number (234806040).

Almost surely, 2^19884135040 is an apocalyptic number.

19884135040 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 19884135040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30055173120).

19884135040 is an abundant number, since it is smaller than the sum of its proper divisors (40226211200).

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

19884135040 is a wasteful number, since it uses less digits than its factorization.

19884135040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791 (or 5779 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 19884135040 in words is "nineteen billion, eight hundred eighty-four million, one hundred thirty-five thousand, forty".