19740447504 has 120 divisors (see below), whose sum is σ = 56325859200. Its totient is φ = 6452087040.

The previous prime is 19740447479. The next prime is 19740447527. The reversal of 19740447504 is 40574404791.

19740447504 is a `hidden beast` number, since 197 + 404 + 4 + 7 + 50 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 19740447504.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3574057 + ... + 3579575.

It is an arithmetic number, because the mean of its divisors is an integer number (469382160).

Almost surely, 2^19740447504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19740447504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28162929600).

19740447504 is an abundant number, since it is smaller than the sum of its proper divisors (36585411696).

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

19740447504 is a wasteful number, since it uses less digits than its factorization.

19740447504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6013 (or 6004 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 19740447504 in words is "nineteen billion, seven hundred forty million, four hundred forty-seven thousand, five hundred four".