19796559995520 has 3072 divisors, whose sum is σ = 93168075571200. Its totient is φ = 3924290764800.

The previous prime is 19796559995519. The next prime is 19796559995539. The reversal of 19796559995520 is 2559995569791.

19796559995520 is a `hidden beast` number, since 1 + 9 + 7 + 9 + 6 + 5 + 59 + 9 + 9 + 552 + 0 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 19796559995520.

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 383 ways as a sum of consecutive naturals, for example, 17947923289 + ... + 17947924391.

It is an arithmetic number, because the mean of its divisors is an integer number (30328149600).

Almost surely, 2^{19796559995520} is an apocalyptic number.

19796559995520 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 19796559995520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46584037785600).

19796559995520 is an abundant number, since it is smaller than the sum of its proper divisors (73371515575680).

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

19796559995520 is a wasteful number, since it uses less digits than its factorization.

19796559995520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 3100072500, while the sum is 81.

The spelling of 19796559995520 in words is "nineteen trillion, seven hundred ninety-six billion, five hundred fifty-nine million, nine hundred ninety-five thousand, five hundred twenty".