19663364160 has 672 divisors, whose sum is σ = 80880508800. Its totient is φ = 4328325120.

The previous prime is 19663364159. The next prime is 19663364167. The reversal of 19663364160 is 6146336691.

19663364160 is a `hidden beast` number, since 1 + 9 + 6 + 633 + 6 + 4 + 1 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (19663364167) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15617611 + ... + 15618869.

It is an arithmetic number, because the mean of its divisors is an integer number (120357900).

Almost surely, 2^19663364160 is an apocalyptic number.

19663364160 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 19663364160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40440254400).

19663364160 is an abundant number, since it is smaller than the sum of its proper divisors (61217144640).

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

19663364160 is a wasteful number, since it uses less digits than its factorization.

19663364160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 19663364160 in words is "nineteen billion, six hundred sixty-three million, three hundred sixty-four thousand, one hundred sixty".