19686648084480 has 720 divisors, whose sum is σ = 76409051158440. Its totient is φ = 4845909639168.

The previous prime is 19686648084407. The next prime is 19686648084491. The reversal of 19686648084480 is 8448084668691.

19686648084480 is a `hidden beast` number, since 1 + 9 + 6 + 8 + 6 + 64 + 8 + 0 + 84 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-2 number, since 2×19686648084480² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 19686648084399 and 19686648084408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 140105139 + ... + 140245581.

Almost surely, 2^{19686648084480} is an apocalyptic number.

19686648084480 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 19686648084480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38204525579220).

19686648084480 is an abundant number, since it is smaller than the sum of its proper divisors (56722403073960).

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

19686648084480 is a wasteful number, since it uses less digits than its factorization.

19686648084480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140508 (or 140466 counting only the distinct ones).

The product of its (nonzero) digits is 509607936, while the sum is 72.

The spelling of 19686648084480 in words is "nineteen trillion, six hundred eighty-six billion, six hundred forty-eight million, eighty-four thousand, four hundred eighty".