19555900224 has 448 divisors, whose sum is σ = 64783411200. Its totient is φ = 5080154112.

The previous prime is 19555900219. The next prime is 19555900237. The reversal of 19555900224 is 42200955591.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 119974767 + ... + 119974929.

Almost surely, 2^19555900224 is an apocalyptic number.

19555900224 is a gapful number since it is divisible by the number (14) 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 19555900224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32391705600).

19555900224 is an abundant number, since it is smaller than the sum of its proper divisors (45227510976).

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

19555900224 is a wasteful number, since it uses less digits than its factorization.

19555900224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 19555900224 in words is "nineteen billion, five hundred fifty-five million, nine hundred thousand, two hundred twenty-four".