19478240000 has 360 divisors, whose sum is σ = 52105320960. Its totient is φ = 7248384000.

The previous prime is 19478239993. The next prime is 19478240057. The reversal of 19478240000 is 4287491.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 246559961 + ... + 246560039.

Almost surely, 2^19478240000 is an apocalyptic number.

19478240000 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 19478240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26052660480).

19478240000 is an abundant number, since it is smaller than the sum of its proper divisors (32627080960).

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

19478240000 is an frugal number, since it uses more digits than its factorization.

19478240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 19478240000 in words is "nineteen billion, four hundred seventy-eight million, two hundred forty thousand".