19550668032 has 864 divisors, whose sum is σ = 74996812800. Its totient is φ = 4944789504.

The previous prime is 19550667977. The next prime is 19550668099. The reversal of 19550668032 is 23086605591.

19550668032 is a `hidden beast` number, since 1 + 9 + 550 + 6 + 68 + 0 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 140652219 + ... + 140652357.

Almost surely, 2^19550668032 is an apocalyptic number.

19550668032 is a gapful number since it is divisible by the number (12) 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 19550668032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37498406400).

19550668032 is an abundant number, since it is smaller than the sum of its proper divisors (55446144768).

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

19550668032 is a wasteful number, since it uses less digits than its factorization.

19550668032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 19550668032 in words is "nineteen billion, five hundred fifty million, six hundred sixty-eight thousand, thirty-two".