19504042272 has 576 divisors, whose sum is σ = 68469166080. Its totient is φ = 5364817920.

The previous prime is 19504042267. The next prime is 19504042273. The reversal of 19504042272 is 27224040591.

19504042272 is a `hidden beast` number, since 195 + 0 + 40 + 422 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (19504042273) 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, 153575073 + ... + 153575199.

It is an arithmetic number, because the mean of its divisors is an integer number (118870080).

Almost surely, 2^19504042272 is an apocalyptic number.

19504042272 is a gapful number since it is divisible by the number (12) 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 19504042272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34234583040).

19504042272 is an abundant number, since it is smaller than the sum of its proper divisors (48965123808).

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

19504042272 is a wasteful number, since it uses less digits than its factorization.

19504042272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 19504042272 in words is "nineteen billion, five hundred four million, forty-two thousand, two hundred seventy-two".