19784478374960 has 240 divisors, whose sum is σ = 51802711955904. Its totient is φ = 6984631406592.

The previous prime is 19784478374933. The next prime is 19784478374977. The reversal of 19784478374960 is 6947387448791.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89978114 + ... + 90197726.

Almost surely, 2^{19784478374960} is an apocalyptic number.

19784478374960 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 19784478374960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25901355977952).

19784478374960 is an abundant number, since it is smaller than the sum of its proper divisors (32018233580944).

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

19784478374960 is a wasteful number, since it uses less digits than its factorization.

19784478374960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219800 (or 219765 counting only the distinct ones).

The product of its (nonzero) digits is 2048385024, while the sum is 77.

The spelling of 19784478374960 in words is "nineteen trillion, seven hundred eighty-four billion, four hundred seventy-eight million, three hundred seventy-four thousand, nine hundred sixty".